diff --git a/.github/workflows/bld.yml b/.github/workflows/bld.yml
index d897fcc..aa4fa67 100644
--- a/.github/workflows/bld.yml
+++ b/.github/workflows/bld.yml
@@ -1,6 +1,6 @@
 name: bld-ci
 
-on: [push, pull_request, workflow_dispatch]
+on: [ push, pull_request, workflow_dispatch ]
 
 jobs:
   build-bld-project:
@@ -8,7 +8,8 @@ jobs:
 
     strategy:
       matrix:
-        java-version: [17, 21, 22]
+        java-version: [ 17, 21, 22 ]
+        kotlin-version: [ 1.19.24, 2.0.0 ]
 
     steps:
       - name: Checkout source repository
@@ -22,17 +23,15 @@ jobs:
           distribution: "zulu"
           java-version: ${{ matrix.java-version }}
 
-      - name: Download the examples dependencies
+      - name: Download dependencies [examples]
         working-directory: examples
-        run: |
-          chmod +x bld
-          ./bld download
+        run: ./bld download
 
-      - name: Run examples tests
+      - name: Run tests [examples]
         working-directory: examples
         run: ./bld compile test
 
-      - name: Build examples documentation
+      - name: Build documentation [examples]
         working-directory: examples
         run: |
           ./bld javadoc
@@ -40,10 +39,7 @@ jobs:
           ./bld dokka-gfm
           ./bld dokka-jekyll
 
-      - name: Grant execute permission for bld
-        run: chmod +x bld
-
-      - name: Download the dependencies
+      - name: Download dependencies
         run: ./bld download
 
       - name: Run tests
diff --git a/.idea/libraries/bld.xml b/.idea/libraries/bld.xml
index cde67cb..b04ed47 100644
--- a/.idea/libraries/bld.xml
+++ b/.idea/libraries/bld.xml
@@ -2,12 +2,12 @@
   <library name="bld">
     <CLASSES>
       <root url="file://$PROJECT_DIR$/lib/bld" />
-      <root url="jar://$USER_HOME$/.bld/dist/bld-1.9.1.jar!/" />
+      <root url="jar://$USER_HOME$/.bld/dist/bld-2.0.0-SNAPSHOT.jar!/" />
       <root url="file://$PROJECT_DIR$/lib/bld" />
     </CLASSES>
     <JAVADOC />
     <SOURCES>
-      <root url="jar://$USER_HOME$/.bld/dist/bld-1.9.1-sources.jar!/" />
+      <root url="jar://$USER_HOME$/.bld/dist/bld-2.0.0-SNAPSHOT-sources.jar!/" />
       <root url="file://$PROJECT_DIR$/lib/bld" />
     </SOURCES>
     <excluded>
diff --git a/.vscode/settings.json b/.vscode/settings.json
index d136e4d..33a9922 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -9,7 +9,7 @@
     ],
     "java.configuration.updateBuildConfiguration": "automatic",
     "java.project.referencedLibraries": [
-        "${HOME}/.bld/dist/bld-1.9.1.jar",
+        "${HOME}/.bld/dist/bld-2.0.0-SNAPSHOT.jar",
         "lib/**/*.jar"
     ]
 }
diff --git a/examples/.idea/libraries/bld.xml b/examples/.idea/libraries/bld.xml
index a2969be..2fb5ff0 100644
--- a/examples/.idea/libraries/bld.xml
+++ b/examples/.idea/libraries/bld.xml
@@ -2,12 +2,12 @@
   <library name="bld">
     <CLASSES>
       <root url="file://$PROJECT_DIR$/lib/bld" />
-      <root url="jar://$USER_HOME$/.bld/dist/bld-1.9.1.jar!/" />
+      <root url="jar://$USER_HOME$/.bld/dist/bld-2.0.0-SNAPSHOT.jar!/" />
     </CLASSES>
     <JAVADOC />
     <SOURCES>
       <root url="file://$PROJECT_DIR$/lib/bld" />
-      <root url="jar://$USER_HOME$/.bld/dist/bld-1.9.1-sources.jar!/" />
+      <root url="jar://$USER_HOME$/.bld/dist/bld-2.0.0-SNAPSHOT-sources.jar!/" />
     </SOURCES>
     <excluded>
       <root url="jar://$PROJECT_DIR$/lib/bld/bld-wrapper.jar!/" />
diff --git a/examples/.idea/misc.xml b/examples/.idea/misc.xml
index 78b0f96..04041f8 100644
--- a/examples/.idea/misc.xml
+++ b/examples/.idea/misc.xml
@@ -6,6 +6,7 @@
     <pattern value="com.example.ExampleBuild" method="dokkaHtml" />
     <pattern value="com.example.ExampleBuild" method="dokkaGfm" />
     <pattern value="com.example.ExampleBuild" method="dokkaJekyll" />
+    <pattern value="com.example.ExampleBuild" method="docs" />
   </component>
   <component name="PDMPlugin">
     <option name="customRuleSets">
diff --git a/examples/.vscode/settings.json b/examples/.vscode/settings.json
index d136e4d..33a9922 100644
--- a/examples/.vscode/settings.json
+++ b/examples/.vscode/settings.json
@@ -9,7 +9,7 @@
     ],
     "java.configuration.updateBuildConfiguration": "automatic",
     "java.project.referencedLibraries": [
-        "${HOME}/.bld/dist/bld-1.9.1.jar",
+        "${HOME}/.bld/dist/bld-2.0.0-SNAPSHOT.jar",
         "lib/**/*.jar"
     ]
 }
diff --git a/examples/README.md b/examples/README.md
index 5570f01..87d4dfd 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -20,6 +20,8 @@
 ## Build the documentation with [Dokka](https://github.com/Kotlin/dokka)
 
 ```console
+./bld docs
+
 ./bld javadoc
 ./bld dokka-html
 ./bld dokka-gfm
diff --git a/examples/lib/bld/bld-wrapper.jar b/examples/lib/bld/bld-wrapper.jar
index 0bfc526..eb33fbb 100644
Binary files a/examples/lib/bld/bld-wrapper.jar and b/examples/lib/bld/bld-wrapper.jar differ
diff --git a/examples/lib/bld/bld-wrapper.properties b/examples/lib/bld/bld-wrapper.properties
index d3f0a91..aa703a4 100644
--- a/examples/lib/bld/bld-wrapper.properties
+++ b/examples/lib/bld/bld-wrapper.properties
@@ -5,4 +5,4 @@ bld.extension-dokka=com.uwyn.rife2:bld-dokka:1.0.0-SNAPSHOT
 bld.extension-kotlin=com.uwyn.rife2:bld-kotlin:1.0.0-SNAPSHOT
 bld.repositories=MAVEN_LOCAL,MAVEN_CENTRAL,RIFE2_SNAPSHOTS,RIFE2_RELEASES
 bld.sourceDirectories=
-bld.version=1.9.1
+bld.version=2.0.0-SNAPSHOT
diff --git a/examples/src/bld/java/com/example/ExampleBuild.java b/examples/src/bld/java/com/example/ExampleBuild.java
index 04d3104..f6a2f09 100644
--- a/examples/src/bld/java/com/example/ExampleBuild.java
+++ b/examples/src/bld/java/com/example/ExampleBuild.java
@@ -39,8 +39,8 @@ public class ExampleBuild extends Project {
                 .include(dependency("org.jetbrains.kotlin", "kotlin-stdlib", kotlin));
         scope(test)
                 .include(dependency("org.jetbrains.kotlin", "kotlin-test-junit5", kotlin))
-                .include(dependency("org.junit.jupiter", "junit-jupiter", version(5, 10, 2)))
-                .include(dependency("org.junit.platform", "junit-platform-console-standalone", version(1, 10, 2)));
+                .include(dependency("org.junit.jupiter", "junit-jupiter", version(5, 10, 3)))
+                .include(dependency("org.junit.platform", "junit-platform-console-standalone", version(1, 10, 3)));
 
         // Include the Kotlin source directory when creating or publishing sources Java Archives
         jarSourcesOperation().sourceDirectories(new File(srcMainDirectory(), "kotlin"));
@@ -48,26 +48,34 @@ public class ExampleBuild extends Project {
 
     public static void main(String[] args) {
         // Enable detailed logging for the Kotlin extension
-//        var level = Level.ALL;
-//        var logger = Logger.getLogger("rife.bld.extension");
-//        var consoleHandler = new ConsoleHandler();
-//
-//        consoleHandler.setLevel(level);
-//        logger.addHandler(consoleHandler);
-//        logger.setLevel(level);
-//        logger.setUseParentHandlers(false);
+        var level = Level.ALL;
+        var logger = Logger.getLogger("rife.bld.extension");
+        var consoleHandler = new ConsoleHandler();
+
+        consoleHandler.setLevel(level);
+        logger.addHandler(consoleHandler);
+        logger.setLevel(level);
+        logger.setUseParentHandlers(false);
 
         new ExampleBuild().start(args);
     }
 
     @BuildCommand(summary = "Compiles the Kotlin project")
     @Override
-    public void compile() throws IOException {
+    public void compile() throws Exception {
         new CompileKotlinOperation()
                 .fromProject(this)
                 .execute();
     }
 
+    @BuildCommand(value = "docs", summary = "Generates all documentation")
+    public void docs() throws ExitStatusException, IOException, InterruptedException {
+        dokkaGfm();
+        dokkaHtml();
+        dokkaJekyll();
+        javadoc();
+    }
+
     @BuildCommand(value = "dokka-gfm", summary = "Generates documentation in GitHub flavored markdown format")
     public void dokkaGfm() throws ExitStatusException, IOException, InterruptedException {
         new DokkaOperation()
diff --git a/lib/bld/bld-wrapper.jar b/lib/bld/bld-wrapper.jar
index 902333e..757ef39 100644
Binary files a/lib/bld/bld-wrapper.jar and b/lib/bld/bld-wrapper.jar differ
diff --git a/lib/bld/bld-wrapper.properties b/lib/bld/bld-wrapper.properties
index aea9055..3037315 100644
--- a/lib/bld/bld-wrapper.properties
+++ b/lib/bld/bld-wrapper.properties
@@ -1,8 +1,8 @@
 bld.downloadExtensionJavadoc=false
 bld.downloadExtensionSources=true
 bld.downloadLocation=
-bld.extension-exec=com.uwyn.rife2:bld-exec:1.0.0
-bld.extension-pmd=com.uwyn.rife2:bld-pmd:1.0.1
-bld.repositories=MAVEN_CENTRAL,MAVEN_LOCAL,RIFE2_RELEASES
+bld.extension-exec=com.uwyn.rife2:bld-exec:1.0.1
+bld.extension-pmd=com.uwyn.rife2:bld-pmd:1.1.2
+bld.repositories=MAVEN_CENTRAL,MAVEN_LOCAL,RIFE2_SNAPSHOTS,RIFE2_RELEASES
 bld.sourceDirectories=
-bld.version=1.9.1
+bld.version=2.0.0-SNAPSHOT
diff --git a/src/bld/java/rife/bld/extension/DokkaOperationBuild.java b/src/bld/java/rife/bld/extension/DokkaOperationBuild.java
index 9f1fc8e..3b9084e 100644
--- a/src/bld/java/rife/bld/extension/DokkaOperationBuild.java
+++ b/src/bld/java/rife/bld/extension/DokkaOperationBuild.java
@@ -51,9 +51,9 @@ public class DokkaOperationBuild extends Project {
                 .include(dependency("org.jetbrains.dokka", "jekyll-plugin", dokka))
                 .include(dependency("com.uwyn.rife2", "bld", version(1, 9, 1)));
         scope(test)
-                .include(dependency("org.junit.jupiter", "junit-jupiter", version(5, 10, 2)))
-                .include(dependency("org.junit.platform", "junit-platform-console-standalone", version(1, 10, 2)))
-                .include(dependency("org.assertj", "assertj-core", version(3, 26, 0)));
+                .include(dependency("org.junit.jupiter", "junit-jupiter", version(5, 10, 3)))
+                .include(dependency("org.junit.platform", "junit-platform-console-standalone", version(1, 10, 3)))
+                .include(dependency("org.assertj", "assertj-core", version(3, 26, 3)));
 
         javadocOperation()
                 .javadocOptions()
@@ -95,7 +95,7 @@ public class DokkaOperationBuild extends Project {
     }
 
     @BuildCommand(summary = "Runs PMD analysis")
-    public void pmd() {
+    public void pmd() throws Exception {
         new PmdOperation()
                 .fromProject(this)
                 .failOnViolation(true)
diff --git a/src/main/java/rife/bld/extension/DokkaOperation.java b/src/main/java/rife/bld/extension/DokkaOperation.java
index a3366d4..03f9323 100644
--- a/src/main/java/rife/bld/extension/DokkaOperation.java
+++ b/src/main/java/rife/bld/extension/DokkaOperation.java
@@ -21,9 +21,11 @@ import rife.bld.extension.dokka.LoggingLevel;
 import rife.bld.extension.dokka.OutputFormat;
 import rife.bld.extension.dokka.SourceSet;
 import rife.bld.operations.AbstractProcessOperation;
+import rife.bld.operations.exceptions.ExitStatusException;
 import rife.tools.StringUtils;
 
 import java.io.File;
+import java.io.IOException;
 import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
@@ -56,7 +58,7 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
     private final Map<String, String> pluginsConfiguration_ = new ConcurrentHashMap<>();
     private boolean delayTemplateSubstitution_;
     private boolean failOnWarning_;
-    private File json;
+    private File json_;
     private LoggingLevel loggingLevel_;
     private String moduleName_;
     private String moduleVersion_;
@@ -77,11 +79,13 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
     }
 
     /**
-     * Returns the list of JARs contained in a given directory.
+     * Returns the JARs contained in a given directory.
+     * <p>
+     * Sources and Javadoc JARs are ignored.
      *
      * @param directory the directory
      * @param regex     the regular expression to match
-     * @return the list of JARs
+     * @return the Java Archives
      */
     public static List<File> getJarList(File directory, String regex) {
         var jars = new ArrayList<File>();
@@ -124,6 +128,18 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
         return this;
     }
 
+    @Override
+    public void execute() throws IOException, InterruptedException, ExitStatusException {
+        if (project_ == null) {
+            if (LOGGER.isLoggable(Level.SEVERE) && !silent()) {
+                LOGGER.severe("A project must be specified.");
+            }
+            throw new ExitStatusException(ExitStatusException.EXIT_FAILURE);
+        } else {
+            super.execute();
+        }
+    }
+
     /**
      * Part of the {@link #execute execute} operation, constructs the command list to use for building the process.
      *
@@ -131,136 +147,134 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
      */
     @Override
     protected List<String> executeConstructProcessCommandList() {
-        if (project_ == null) {
-            throw new IllegalArgumentException("A project must be specified.");
-        }
-
         final List<String> args = new ArrayList<>();
 
-        // java
-        args.add(javaTool());
+        if (project_ != null) {
+            // java
+            args.add(javaTool());
 
-        var cli = getJarList(project_.libBldDirectory(), "^.*dokka-cli.*\\.jar$");
-
-        if (cli.size() != 1) {
-            throw new RuntimeException("The dokka-cli JAR could not be found.");
-        }
-
-        // -jar dokka-cli
-        args.add("-jar");
-        args.add(cli.get(0).getAbsolutePath());
-
-        // -pluginClasspath
-        if (!pluginsClasspath_.isEmpty()) {
-            args.add("-pluginsClasspath");
-            args.add(pluginsClasspath_.stream().map(File::getAbsolutePath).collect(Collectors.joining(SEMICOLON)));
-        }
-
-        // -sourceSet
-        var sourceSetArgs = sourceSet_.args();
-        if (sourceSetArgs.isEmpty()) {
-            throw new IllegalArgumentException("At least one sourceSet is required.");
-        } else {
-            args.add("-sourceSet");
-            args.add(String.join(" ", sourceSet_.args()));
-        }
-
-        // -outputDir
-        if (outputDir_ != null) {
-            if (!outputDir_.exists() && !outputDir_.mkdirs()) {
-                throw new RuntimeException("Could not create: " + outputDir_.getAbsolutePath());
+            var jarList = getJarList(project_.libBldDirectory(), "^.*dokka-cli.*\\.jar$");
+            if (!jarList.isEmpty()) {
+                // class path
+                args.add("-cp");
+                args.add(jarList.stream().map(File::getAbsolutePath).collect(Collectors.joining(File.pathSeparator)));
             }
 
-            args.add("-outputDir");
-            args.add(outputDir_.getAbsolutePath());
-        }
+            // main class
+            args.add("org.jetbrains.dokka.MainKt");
 
-        // -delayTemplateSubstitution
-        if (delayTemplateSubstitution_) {
-            args.add("-delayTemplateSubstitution");
-        }
+            // -pluginClasspath
+            if (!pluginsClasspath_.isEmpty()) {
+                args.add("-pluginsClasspath");
+                args.add(pluginsClasspath_.stream().map(File::getAbsolutePath).collect(Collectors.joining(SEMICOLON)));
+            }
 
-        // -failOnWarning
-        if (failOnWarning_) {
-            args.add("-failOnWarning");
-        }
+            // -sourceSet
+            var sourceSetArgs = sourceSet_.args();
+            if (sourceSetArgs.isEmpty()) {
+                throw new IllegalArgumentException("At least one sourceSet is required.");
+            } else {
+                args.add("-sourceSet");
+                args.add(String.join(" ", sourceSet_.args()));
+            }
 
-        // -globalLinks_
-        if (!globalLinks_.isEmpty()) {
-            args.add("-globalLinks");
-            var links = new ArrayList<String>();
-            globalLinks_.forEach((k, v) ->
-                    links.add(String.format("%s^%s", k, v)));
-            args.add(String.join("^^", links));
-        }
+            // -outputDir
+            if (outputDir_ != null) {
+                if (!outputDir_.exists() && !outputDir_.mkdirs()) {
+                    throw new RuntimeException("Could not create: " + outputDir_.getAbsolutePath());
+                }
 
-        // -globalPackageOptions
-        if (!globalPackageOptions_.isEmpty()) {
-            args.add("-globalPackageOptions");
-            args.add(String.join(SEMICOLON, globalPackageOptions_));
-        }
+                args.add("-outputDir");
+                args.add(outputDir_.getAbsolutePath());
+            }
 
-        // -globalSrcLinks
-        if (!globalSrcLinks_.isEmpty()) {
-            args.add("-globalSrcLinks_");
-            args.add(String.join(SEMICOLON, globalSrcLinks_));
-        }
+            // -delayTemplateSubstitution
+            if (delayTemplateSubstitution_) {
+                args.add("-delayTemplateSubstitution");
+            }
 
-        // -includes
-        if (!includes_.isEmpty()) {
-            args.add("-includes");
-            args.add(includes_.stream().map(File::getAbsolutePath).collect(Collectors.joining(SEMICOLON)));
-        }
+            // -failOnWarning
+            if (failOnWarning_) {
+                args.add("-failOnWarning");
+            }
 
-        // -loggingLevel
-        if (loggingLevel_ != null) {
-            args.add("-loggingLevel");
-            args.add(loggingLevel_.name().toLowerCase());
-        }
+            // -globalLinks_
+            if (!globalLinks_.isEmpty()) {
+                args.add("-globalLinks");
+                var links = new ArrayList<String>();
+                globalLinks_.forEach((k, v) ->
+                        links.add(String.format("%s^%s", k, v)));
+                args.add(String.join("^^", links));
+            }
 
-        // -moduleName
-        if (isNotBlank(moduleName_)) {
-            args.add("-moduleName");
-            args.add(moduleName_);
-        }
+            // -globalPackageOptions
+            if (!globalPackageOptions_.isEmpty()) {
+                args.add("-globalPackageOptions");
+                args.add(String.join(SEMICOLON, globalPackageOptions_));
+            }
 
-        // -moduleVersion
-        if (isNotBlank(moduleVersion_)) {
-            args.add("-moduleVersion");
-            args.add(moduleVersion_);
-        }
+            // -globalSrcLinks
+            if (!globalSrcLinks_.isEmpty()) {
+                args.add("-globalSrcLinks_");
+                args.add(String.join(SEMICOLON, globalSrcLinks_));
+            }
 
-        // -noSuppressObviousFunctions
-        if (noSuppressObviousFunctions_) {
-            args.add("-noSuppressObviousFunctions");
-        }
+            // -includes
+            if (!includes_.isEmpty()) {
+                args.add("-includes");
+                args.add(includes_.stream().map(File::getAbsolutePath).collect(Collectors.joining(SEMICOLON)));
+            }
 
-        // -offlineMode
-        if (offlineMode_) {
-            args.add("-offlineMode");
-        }
+            // -loggingLevel
+            if (loggingLevel_ != null) {
+                args.add("-loggingLevel");
+                args.add(loggingLevel_.name().toLowerCase());
+            }
 
-        // -pluginConfiguration
-        if (!pluginsConfiguration_.isEmpty()) {
-            args.add("-pluginsConfiguration");
-            var confs = new ArrayList<String>();
-            pluginsConfiguration_.forEach((k, v) ->
-                    confs.add(String.format("%s=%s", encodeJson(k), encodeJson(v))));
-            args.add(String.join("^^", confs));
-        }
+            // -moduleName
+            if (isNotBlank(moduleName_)) {
+                args.add("-moduleName");
+                args.add(moduleName_);
+            }
 
-        // -suppressInheritedMembers
-        if (suppressInheritedMembers_) {
-            args.add("-suppressInheritedMembers");
-        }
+            // -moduleVersion
+            if (isNotBlank(moduleVersion_)) {
+                args.add("-moduleVersion");
+                args.add(moduleVersion_);
+            }
 
-        // json
-        if (json != null) {
-            args.add(json.getAbsolutePath());
-        }
+            // -noSuppressObviousFunctions
+            if (noSuppressObviousFunctions_) {
+                args.add("-noSuppressObviousFunctions");
+            }
 
-        if (LOGGER.isLoggable(Level.FINE)) {
-            LOGGER.fine(String.join(" ", args));
+            // -offlineMode
+            if (offlineMode_) {
+                args.add("-offlineMode");
+            }
+
+            // -pluginConfiguration
+            if (!pluginsConfiguration_.isEmpty()) {
+                args.add("-pluginsConfiguration");
+                var confs = new ArrayList<String>();
+                pluginsConfiguration_.forEach((k, v) ->
+                        confs.add(String.format("%s=%s", encodeJson(k), encodeJson(v))));
+                args.add(String.join("^^", confs));
+            }
+
+            // -suppressInheritedMembers
+            if (suppressInheritedMembers_) {
+                args.add("-suppressInheritedMembers");
+            }
+
+            // json
+            if (json_ != null) {
+                args.add(json_.getAbsolutePath());
+            }
+
+            if (LOGGER.isLoggable(Level.FINE)) {
+                LOGGER.fine(String.join(" ", args));
+            }
         }
 
         return args;
@@ -338,7 +352,7 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
     }
 
     /**
-     * Sets the global list of package configurations.
+     * Sets the global package configurations.
      * <p>
      * Using format:
      * <ul>
@@ -355,12 +369,12 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
      * @return this operation instance
      */
     public DokkaOperation globalPackageOptions(String... options) {
-        Collections.addAll(globalPackageOptions_, options);
+        globalPackageOptions_.addAll(List.of(options));
         return this;
     }
 
     /**
-     * Retrieves the global list of package configurations.
+     * Retrieves the global package configurations.
      *
      * @return the package configurations
      */
@@ -369,7 +383,7 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
     }
 
     /**
-     * Sets the global list of package configurations.
+     * Sets the global package configurations.
      * <p>
      * Using format:
      * <ul>
@@ -382,7 +396,7 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
      * <li>...</li>
      * </ul>
      *
-     * @param options the list of package configurations
+     * @param options the package configurations
      * @return this operation instance
      */
     public DokkaOperation globalPackageOptions(Collection<String> options) {
@@ -397,7 +411,7 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
      * @return this operation instance
      */
     public DokkaOperation globalSrcLink(String... links) {
-        Collections.addAll(globalSrcLinks_, links);
+        globalSrcLinks_.addAll(List.of(links));
         return this;
     }
 
@@ -432,7 +446,7 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
      * @return this operation instance
      */
     public DokkaOperation includes(File... files) {
-        Collections.addAll(includes_, files);
+        includes_.addAll(List.of(files));
         return this;
     }
 
@@ -447,9 +461,7 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
      * @return this operation instance
      */
     public DokkaOperation includes(String... files) {
-        Collections.addAll(includes_, Arrays.stream(files)
-                .map(File::new)
-                .toArray(File[]::new));
+        includes_.addAll(Arrays.stream(files).map(File::new).toList());
         return this;
     }
 
@@ -469,7 +481,7 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
      * <p>
      * This can be configured on per-package basis.
      *
-     * @param files the list of files
+     * @param files the markdown files
      * @return this operation instance
      */
     public DokkaOperation includes(Collection<File> files) {
@@ -483,7 +495,7 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
      * @param configuration the configuration file path
      */
     public DokkaOperation json(File configuration) {
-        json = configuration;
+        json_ = configuration;
         return this;
     }
 
@@ -648,26 +660,24 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
     }
 
     /**
-     * Sets the list of jars with Dokka plugins and their dependencies.
+     * Sets the jars for Dokka plugins and their dependencies.
      *
      * @param jars one or more jars
      * @return this operation instance
      */
     public DokkaOperation pluginsClasspath(File... jars) {
-        Collections.addAll(pluginsClasspath_, jars);
+        pluginsClasspath_.addAll(List.of(jars));
         return this;
     }
 
     /**
-     * Sets the list of jars with Dokka plugins and their dependencies.
+     * Sets the jars for Dokka plugins and their dependencies.
      *
      * @param jars one or more jars
      * @return this operation instance
      */
     public DokkaOperation pluginsClasspath(String... jars) {
-        Collections.addAll(pluginsClasspath_, Arrays.stream(jars)
-                .map(File::new)
-                .toArray(File[]::new));
+        pluginsClasspath_.addAll(Arrays.stream(jars).map(File::new).toList());
         return this;
     }
 
@@ -681,9 +691,9 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
     }
 
     /**
-     * Sets the list of jars with Dokka plugins and their dependencies.
+     * Sets the jars for Dokka plugins and their dependencies.
      *
-     * @param jars the list of jars
+     * @param jars the jars
      * @return this operation instance
      */
     public DokkaOperation pluginsClasspath(Collection<File> jars) {
diff --git a/src/main/java/rife/bld/extension/dokka/SourceSet.java b/src/main/java/rife/bld/extension/dokka/SourceSet.java
index 1bab8cf..2b5f24a 100644
--- a/src/main/java/rife/bld/extension/dokka/SourceSet.java
+++ b/src/main/java/rife/bld/extension/dokka/SourceSet.java
@@ -164,25 +164,21 @@ public class SourceSet {
         // -noJdkLink
         if (noJdkLink_) {
             args.add("-noJdkLink");
-            args.add(String.valueOf(noJdkLink_));
         }
 
         // -noSkipEmptyPackages
         if (noSkipEmptyPackages_) {
             args.add("-noSkipEmptyPackages");
-            args.add(String.valueOf(noSkipEmptyPackages_));
         }
 
         // -noStdlibLink
         if (noStdlibLink_) {
             args.add("-noStdlibLink");
-            args.add(String.valueOf(noStdlibLink_));
         }
 
         // -reportUndocumented
         if (reportUndocumented_) {
             args.add("-reportUndocumented");
-            args.add(String.valueOf(reportUndocumented_));
         }
 
         // -perPackageOptions
@@ -200,7 +196,6 @@ public class SourceSet {
         // -skipDeprecated
         if (skipDeprecated_) {
             args.add("-skipDeprecated");
-            args.add(String.valueOf(skipDeprecated_));
         }
 
         // -src
@@ -243,7 +238,7 @@ public class SourceSet {
      * @return this operation instance
      */
     public SourceSet classpath(File... files) {
-        Collections.addAll(classpath_, files);
+        classpath_.addAll(List.of(files));
         return this;
     }
 
@@ -258,9 +253,7 @@ public class SourceSet {
      * @return this operation instance
      */
     public SourceSet classpath(String... files) {
-        Collections.addAll(classpath_, Arrays.stream(files)
-                .map(File::new)
-                .toArray(File[]::new));
+        classpath_.addAll(Arrays.stream(files).map(File::new).toList());
         return this;
     }
 
@@ -271,7 +264,7 @@ public class SourceSet {
      * <p>
      * This option accepts both {@code .jar} and {@code .klib} files.
      *
-     * @param files the list of files
+     * @param files the collection of files
      * @return this operation instance
      */
     public SourceSet classpath(Collection<File> files) {
@@ -349,7 +342,7 @@ public class SourceSet {
      * @return this operation instance
      */
     public SourceSet documentedVisibilities(DocumentedVisibility... visibilities) {
-        documentedVisibilities_.addAll(Arrays.asList(visibilities));
+        documentedVisibilities_.addAll(List.of(visibilities));
         return this;
     }
 
@@ -402,7 +395,7 @@ public class SourceSet {
     /**
      * Sets the Markdown files that contain module and package documentation.
      * <p>
-     * A list of Markdown files that contain module and package documentation.
+     * The Markdown files that contain module and package documentation.
      * <p>
      * The contents of the specified files are parsed and embedded into documentation as module and package
      * descriptions.
@@ -411,14 +404,14 @@ public class SourceSet {
      * @return this operation instance
      */
     public SourceSet includes(File... files) {
-        Collections.addAll(includes_, files);
+        includes_.addAll(List.of(files));
         return this;
     }
 
     /**
      * Sets the Markdown files that contain module and package documentation.
      * <p>
-     * A list of Markdown files that contain module and package documentation.
+     * The Markdown files that contain module and package documentation.
      * <p>
      * The contents of the specified files are parsed and embedded into documentation as module and package
      * descriptions.
@@ -427,9 +420,7 @@ public class SourceSet {
      * @return this operation instance
      */
     public SourceSet includes(String... files) {
-        Collections.addAll(includes_, Arrays.stream(files)
-                .map(File::new)
-                .toArray(File[]::new));
+        includes_.addAll(Arrays.stream(files).map(File::new).toList());
         return this;
     }
 
@@ -445,12 +436,12 @@ public class SourceSet {
     /**
      * Sets the Markdown files that contain module and package documentation.
      * <p>
-     * A list of Markdown files that contain module and package documentation.
+     * The Markdown files that contain module and package documentation.
      * <p>
      * The contents of the specified files are parsed and embedded into documentation as module and package
      * descriptions.
      *
-     * @param files the list of files
+     * @param files the collection of files
      * @return this operation instance
      */
     public SourceSet includes(Collection<File> files) {
@@ -559,7 +550,7 @@ public class SourceSet {
     }
 
     /**
-     * Set the list of package source set configuration.
+     * Set the package source set configuration.
      * <p>
      * A set of parameters specific to matched packages within this source set.
      * <p>
@@ -574,7 +565,7 @@ public class SourceSet {
      * <li>...</li>
      * </ul>
      *
-     * @param perPackageOptions the list of per package options
+     * @param perPackageOptions the per package options
      * @return this operation instance
      */
     public SourceSet perPackageOptions(Collection<String> perPackageOptions) {
@@ -583,7 +574,7 @@ public class SourceSet {
     }
 
     /**
-     * Retrieves the list of package source set configuration.
+     * Retrieves the package source set configuration.
      *
      * @return the package source set configuration
      */
@@ -592,7 +583,7 @@ public class SourceSet {
     }
 
     /**
-     * Set the list of package source set configuration.
+     * Set the package source set configuration.
      * <p>
      * A set of parameters specific to matched packages within this source set.
      * <p>
@@ -607,11 +598,11 @@ public class SourceSet {
      * <li>...</li>
      * </ul>
      *
-     * @param perPackageOptions the list of per package options
+     * @param perPackageOptions the per package options
      * @return this operation instance
      */
     public SourceSet perPackageOptions(String... perPackageOptions) {
-        Collections.addAll(perPackageOptions_, perPackageOptions);
+        perPackageOptions_.addAll(List.of(perPackageOptions));
         return this;
     }
 
@@ -634,12 +625,12 @@ public class SourceSet {
     }
 
     /**
-     * Set the list of directories or files that contain sample functions.
+     * Set the directories or files that contain sample functions.
      * <p>
-     * A list of directories or files that contain sample functions which are referenced via the {@code @sample} KDoc
+     * The directories or files that contain sample functions which are referenced via the {@code @sample} KDoc
      * tag.
      *
-     * @param samples the list of samples
+     * @param samples the samples
      * @return this operation instance
      */
     public SourceSet samples(Collection<File> samples) {
@@ -648,7 +639,7 @@ public class SourceSet {
     }
 
     /**
-     * Retrieves the list of directories or files that contain sample functions.
+     * Retrieves the directories or files that contain sample functions.
      *
      * @return the directories or files
      */
@@ -657,32 +648,30 @@ public class SourceSet {
     }
 
     /**
-     * Set the list of directories or files that contain sample functions.
+     * Set the directories or files that contain sample functions.
      * <p>
-     * A list of directories or files that contain sample functions which are referenced via the {@code @sample} KDoc
+     * The directories or files that contain sample functions which are referenced via the {@code @sample} KDoc
      * tag.
      *
      * @param samples nne or more samples
      * @return this operation instance
      */
     public SourceSet samples(File... samples) {
-        Collections.addAll(samples_, samples);
+        samples_.addAll(List.of(samples));
         return this;
     }
 
     /**
-     * Set the list of directories or files that contain sample functions.
+     * Set the directories or files that contain sample functions.
      * <p>
-     * A list of directories or files that contain sample functions which are referenced via the {@code @sample} KDoc
+     * The directories or files that contain sample functions which are referenced via the {@code @sample} KDoc
      * tag.
      *
      * @param samples nne or more samples
      * @return this operation instance
      */
     public SourceSet samples(String... samples) {
-        Collections.addAll(samples_, Arrays.stream(samples)
-                .map(File::new)
-                .toArray(File[]::new));
+        samples_.addAll(Arrays.stream(samples).map(File::new).toList());
         return this;
     }
 
@@ -718,7 +707,7 @@ public class SourceSet {
      * The source code roots to be analyzed and documented. Acceptable inputs are directories and individual
      * {@code .kt} / {@code .java} files.
      *
-     * @param src the list of source code roots
+     * @param src the source code roots
      * @return this operation instance
      */
     public SourceSet src(Collection<File> src) {
@@ -736,7 +725,7 @@ public class SourceSet {
      * @return this operation instance
      */
     public SourceSet src(File... src) {
-        Collections.addAll(src_, src);
+        src_.addAll(List.of(src));
         return this;
     }
 
@@ -750,9 +739,7 @@ public class SourceSet {
      * @return this operation instance
      */
     public SourceSet src(String... src) {
-        Collections.addAll(src_, Arrays.stream(src)
-                .map(File::new)
-                .toArray(File[]::new));
+        src_.addAll(Arrays.stream(src).map(File::new).toList());
         return this;
     }
 
@@ -805,7 +792,7 @@ public class SourceSet {
      * <p>
      * The files to be suppressed when generating documentation.
      *
-     * @param suppressedFiles the list of suppressed files
+     * @param suppressedFiles the suppressed files
      * @return this operation instance
      */
     public SourceSet suppressedFiles(Collection<File> suppressedFiles) {
@@ -832,9 +819,7 @@ public class SourceSet {
      * @return this operation instance
      */
     public SourceSet suppressedFiles(String... suppressedFiles) {
-        Collections.addAll(suppressedFiles_, Arrays.stream(suppressedFiles)
-                .map(File::new)
-                .toArray(File[]::new));
+        suppressedFiles_.addAll(Arrays.stream(suppressedFiles).map(File::new).toList());
         return this;
     }
 
@@ -847,7 +832,7 @@ public class SourceSet {
      * @return this operation instance
      */
     public SourceSet suppressedFiles(File... suppressedFiles) {
-        suppressedFiles_.addAll(Arrays.asList(suppressedFiles));
+        suppressedFiles_.addAll(List.of(suppressedFiles));
         return this;
     }
 }
diff --git a/src/test/java/rife/bld/extension/DokkaOperationTest.java b/src/test/java/rife/bld/extension/DokkaOperationTest.java
index dbd0585..11c2bca 100644
--- a/src/test/java/rife/bld/extension/DokkaOperationTest.java
+++ b/src/test/java/rife/bld/extension/DokkaOperationTest.java
@@ -16,11 +16,13 @@
 
 package rife.bld.extension;
 
+import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 import rife.bld.blueprints.BaseProjectBlueprint;
 import rife.bld.extension.dokka.LoggingLevel;
 import rife.bld.extension.dokka.OutputFormat;
 import rife.bld.extension.dokka.SourceSet;
+import rife.bld.operations.exceptions.ExitStatusException;
 
 import java.io.File;
 import java.io.IOException;
@@ -29,46 +31,74 @@ import java.nio.file.Paths;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
+import java.util.logging.ConsoleHandler;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 import java.util.stream.IntStream;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.assertj.core.api.AssertionsForClassTypes.assertThatCode;
 
 class DokkaOperationTest {
+    private static final File EXAMPLES = new File("examples");
+    private static final String FILE_1 = "file1";
+    private static final String FILE_2 = "file2";
+    private static final String FILE_3 = "file3";
+    private static final String FILE_4 = "file4";
+    private static final String OPTION_1 = "option1";
+    private static final String OPTION_2 = "option2";
+    private static final String OPTION_3 = "option3";
+    private static final String OPTION_4 = "option4";
+    private static final String PATH_1 = "path1";
+    private static final String PATH_2 = "path2";
+    private static final String PATH_3 = "path3";
+    private static final String PATH_4 = "path4";
+
+    @BeforeAll
+    static void beforeAll() {
+        var level = Level.ALL;
+        var logger = Logger.getLogger("rife.bld.extension");
+        var consoleHandler = new ConsoleHandler();
+        consoleHandler.setLevel(level);
+        logger.addHandler(consoleHandler);
+        logger.setLevel(level);
+        logger.setUseParentHandlers(false);
+    }
+
     @Test
-    @SuppressWarnings({"PMD.AvoidDuplicateLiterals"})
     void executeConstructProcessCommandListTest() throws IOException {
         var args = Files.readAllLines(Paths.get("src", "test", "resources", "dokka-args.txt"));
 
         assertThat(args).isNotEmpty();
 
-        var examples = new File("examples");
         var jsonConf = new File("config.json");
         var op = new DokkaOperation()
                 .delayTemplateSubstitution(true)
                 .failOnWarning(true)
-                .fromProject(new BaseProjectBlueprint(examples, "com.example", "Example"))
-                .globalLinks("s", "link")
-                .globalLinks(Map.of("s2", "link2"))
-                .globalPackageOptions("option1", "option2")
-                .globalPackageOptions(List.of("option3", "option4"))
+                .fromProject(new BaseProjectBlueprint(EXAMPLES, "com.example", "Example"))
+                .globalLinks("s", "gLink1")
+                .globalLinks(Map.of("s2", "gLink2"))
+                .globalPackageOptions(OPTION_1, OPTION_2)
+                .globalPackageOptions(List.of(OPTION_3, OPTION_4))
                 .globalSrcLink("link1", "link2")
                 .globalSrcLink(List.of("link3", "link4"))
-                .includes(new File("file1"))
-                .includes("file2")
-                .includes(List.of(new File("file3"), new File("file4")))
+                .includes(new File(FILE_1))
+                .includes(FILE_2)
+                .includes(List.of(new File(FILE_3), new File(FILE_4)))
                 .json(jsonConf)
                 .loggingLevel(LoggingLevel.DEBUG)
                 .moduleName("name")
                 .moduleVersion("1.0")
                 .noSuppressObviousFunctions(true)
                 .offlineMode(true)
-                .outputDir(new File(examples, "build"))
+                .outputDir(new File(EXAMPLES, "build"))
                 .outputFormat(OutputFormat.JAVADOC)
                 .pluginConfigurations("name", "{\"json\"}")
                 .pluginConfigurations(Map.of("{\"name2\"}", "json2", "name3}", "{json3"))
-                .pluginsClasspath(new File("path1"))
-                .pluginsClasspath("path2")
-                .pluginsClasspath(List.of(new File("path3"), new File("path4")))
+                .pluginsClasspath(new File(PATH_1))
+                .pluginsClasspath(PATH_2)
+                .pluginsClasspath(List.of(new File(PATH_3), new File(PATH_4)))
                 .sourceSet(new SourceSet().classpath(
                         List.of(
                                 new File("examples/foo.jar"),
@@ -95,25 +125,26 @@ class DokkaOperationTest {
             assertThat(found).as(p + " not found.").isTrue();
         }
 
-        var path = examples.getAbsolutePath();
+        var path = EXAMPLES.getAbsolutePath();
         var dokkaJar = "1.9.20.jar";
         var matches = List.of("java",
-                "-jar", path + "/lib/bld/dokka-cli-" + dokkaJar,
+                "-cp", path + "/lib/bld/dokka-cli-" + dokkaJar,
+                "org.jetbrains.dokka.MainKt",
                 "-pluginsClasspath", path + "/lib/bld/dokka-base-" + dokkaJar + ';' +
                         path + "/lib/bld/analysis-kotlin-descriptors-" + dokkaJar + ';' +
                         path + "/lib/bld/javadoc-plugin-" + dokkaJar + ';' +
                         path + "/lib/bld/korte-jvm-4.0.10.jar;" +
                         path + "/lib/bld/kotlin-as-java-plugin-" + dokkaJar + ';' +
-                        TestUtil.localPath("path1", "path2", "path3", "path4"),
+                        TestUtils.localPath(PATH_1, PATH_2, PATH_3, PATH_4),
                 "-sourceSet", "-src " + path + "/src/main/kotlin" + " -classpath " + path + "/foo.jar;"
                         + path + "/bar.jar",
                 "-outputDir", path + "/build",
                 "-delayTemplateSubstitution",
                 "-failOnWarning",
-                "-globalLinks", "s^link^^s2^link2",
-                "-globalPackageOptions", "option1;option2;option3;option4",
+                "-globalLinks", "s^gLink1^^s2^gLink2",
+                "-globalPackageOptions", OPTION_1 + ';' + OPTION_2 + ';' + OPTION_3 + ';' + OPTION_4,
                 "-globalSrcLinks_", "link1;link2;link3;link4",
-                "-includes", TestUtil.localPath("file1", "file2", "file3", "file4"),
+                "-includes", TestUtils.localPath(FILE_1, FILE_2, FILE_3, FILE_4),
                 "-loggingLevel", "debug",
                 "-moduleName", "name",
                 "-moduleVersion", "1.0",
@@ -134,4 +165,20 @@ class DokkaOperationTest {
             }
         });
     }
+
+    @Test
+    void executeNoProjectTest() {
+        var op = new DokkaOperation();
+        assertThatThrownBy(op::execute).isInstanceOf(ExitStatusException.class);
+    }
+
+    @Test
+    void executeTest() {
+        var op = new DokkaOperation()
+                .fromProject(
+                        new BaseProjectBlueprint(EXAMPLES, "com.example", "examples"))
+                .outputDir("build/javadoc")
+                .outputFormat(OutputFormat.JAVADOC);
+        assertThatCode(op::execute).doesNotThrowAnyException();
+    }
 }
diff --git a/src/test/java/rife/bld/extension/TestUtil.java b/src/test/java/rife/bld/extension/TestUtils.java
similarity index 85%
rename from src/test/java/rife/bld/extension/TestUtil.java
rename to src/test/java/rife/bld/extension/TestUtils.java
index b6f9225..832d549 100644
--- a/src/test/java/rife/bld/extension/TestUtil.java
+++ b/src/test/java/rife/bld/extension/TestUtils.java
@@ -23,8 +23,8 @@ import java.util.stream.Collectors;
 import static rife.bld.extension.DokkaOperation.SEMICOLON;
 
 @SuppressWarnings("PMD.TestClassWithoutTestCases")
-public final class TestUtil {
-    private TestUtil() {
+public final class TestUtils {
+    private TestUtils() {
         // no-op
     }
 
@@ -35,6 +35,6 @@ public final class TestUtil {
      * @return the local path
      */
     public static String localPath(String... fileNames) {
-        return Arrays.stream(fileNames).map(it -> new File(it).getAbsolutePath()).collect(Collectors.joining(SEMICOLON));
+        return Arrays.stream(fileNames).map(f -> new File(f).getAbsolutePath()).collect(Collectors.joining(SEMICOLON));
     }
 }
diff --git a/src/test/java/rife/bld/extension/dokka/SourceSetTest.java b/src/test/java/rife/bld/extension/dokka/SourceSetTest.java
index 6436385..95453c4 100644
--- a/src/test/java/rife/bld/extension/dokka/SourceSetTest.java
+++ b/src/test/java/rife/bld/extension/dokka/SourceSetTest.java
@@ -27,36 +27,52 @@ import java.util.Map;
 import java.util.stream.IntStream;
 
 import static org.assertj.core.api.Assertions.assertThat;
-import static rife.bld.extension.TestUtil.localPath;
+import static rife.bld.extension.TestUtils.localPath;
 
 class SourceSetTest {
-    public static final String SAMPLES_1 = "samples1";
-    public static final String SAMPLES_2 = "samples2";
-    public static final String SUP_1 = "sup1";
-    public static final String SUP_2 = "sup2";
+    private static final String CLASSPATH_1 = "classpath1";
+    private static final String CLASSPATH_2 = "classpath2";
+    private static final String INCLUDES_1 = "includes1";
+    private static final String INCLUDES_2 = "includes2";
+    private static final String INCLUDES_3 = "includes3";
+    private static final String INCLUDES_4 = "includes4";
+    private static final String OPTION_1 = "option1";
+    private static final String OPTION_2 = "option2";
+    private static final String PATH_1 = "path1";
+    private static final String PATH_2 = "path2";
+    private static final String SAMPLES_1 = "samples1";
+    private static final String SAMPLES_2 = "samples2";
+    private static final String SAMPLES_3 = "samples3";
+    private static final String SRC_1 = "src1";
+    private static final String SRC_2 = "src2";
+    private static final String SRC_3 = "src3";
+    private static final String SRC_4 = "src4";
+    private static final String SUP_1 = "sup1";
+    private static final String SUP_2 = "sup2";
+    private static final String SUP_3 = "sup3";
 
     @Test
     void sourceSetCollectionsTest() {
         var args = new SourceSet()
-                .classpath(List.of(new File("path1"), new File("path2")))
+                .classpath(List.of(new File(PATH_1), new File(PATH_2)))
                 .dependentSourceSets(Map.of("set1", "set2", "set3", "set4"))
                 .externalDocumentationLinks(Map.of("link1", "link2", "link3", "link4"))
-                .perPackageOptions(List.of("option1", "option2"))
+                .perPackageOptions(List.of(OPTION_1, OPTION_2))
                 .samples(List.of(new File(SAMPLES_1)))
                 .samples(new File(SAMPLES_2))
-                .samples("samples3")
+                .samples(SAMPLES_3)
                 .suppressedFiles(List.of(new File(SUP_1)))
                 .suppressedFiles(new File(SUP_2))
-                .suppressedFiles("sup3")
+                .suppressedFiles(SUP_3)
                 .args();
 
         var matches = List.of(
-                "-classpath", localPath("path1", "path2"),
+                "-classpath", localPath(PATH_1, PATH_2),
                 "-dependentSourceSets", "set1/set2;set3/set4",
                 "-externalDocumentationLinks", "link3^link4^^link1^link2",
-                "-perPackageOptions", "option1;option2",
-                "-samples", localPath(SAMPLES_1, SAMPLES_2, "samples3"),
-                "-suppressedFiles", localPath(SUP_1, SUP_2, "sup3")
+                "-perPackageOptions", OPTION_1 + ';' + OPTION_2,
+                "-samples", localPath(SAMPLES_1, SAMPLES_2, SAMPLES_3),
+                "-suppressedFiles", localPath(SUP_1, SUP_2, SUP_3)
         );
 
         assertThat(args).hasSize(matches.size());
@@ -65,7 +81,12 @@ class SourceSetTest {
     }
 
     @Test
-    @SuppressWarnings("PMD.AvoidDuplicateLiterals")
+    void sourceSetIntVersionsTest() {
+        var args = new SourceSet().apiVersion(1).languageVersion(2);
+        assertThat(args.args()).containsExactly("-apiVersion", "1", "-languageVersion", "2");
+    }
+
+    @Test
     void sourceSetTest() throws IOException {
         var args = Files.readAllLines(Paths.get("src", "test", "resources", "dokka-sourceset-args.txt"));
 
@@ -74,32 +95,32 @@ class SourceSetTest {
         var sourceSet = new SourceSet()
                 .analysisPlatform(AnalysisPlatform.JVM)
                 .apiVersion("1.0")
-                .classpath("classpath1")
-                .classpath(new File("classpath2"))
+                .classpath(CLASSPATH_1)
+                .classpath(new File(CLASSPATH_2))
                 .dependentSourceSets("moduleName", "sourceSetName")
                 .dependentSourceSets("moduleName2", "sourceSetName2")
                 .displayName("name")
                 .documentedVisibilities(DocumentedVisibility.PACKAGE, DocumentedVisibility.PRIVATE)
                 .externalDocumentationLinks("url1", "packageListUrl1")
                 .externalDocumentationLinks("url2", "packageListUrl2")
-                .includes("includes1", "includes2")
-                .includes(new File("includes3"))
-                .includes(List.of(new File("includes4")))
+                .includes(INCLUDES_1, INCLUDES_2)
+                .includes(new File(INCLUDES_3))
+                .includes(List.of(new File(INCLUDES_4)))
                 .jdkVersion(18)
                 .languageVersion("2.0")
                 .noJdkLink(true)
                 .noSkipEmptyPackages(true)
                 .noStdlibLink(true)
-                .perPackageOptions("options1", "options2")
+                .perPackageOptions(OPTION_1, OPTION_2)
                 .reportUndocumented(true)
                 .samples(SAMPLES_1, SAMPLES_2)
                 .skipDeprecated(true)
                 .sourceSetName("setName")
-                .src("src1", "src2")
-                .src(new File("src3"))
-                .src(List.of(new File("src4")))
-                .srcLink("path1", "remote1", "#suffix1")
-                .srcLink(new File("path2"), "remote2", "#suffix2")
+                .src(SRC_1, SRC_2)
+                .src(new File(SRC_3))
+                .src(List.of(new File(SRC_4)))
+                .srcLink(PATH_1, "remote1", "#suffix1")
+                .srcLink(new File(PATH_2), "remote2", "#suffix2")
                 .suppressedFiles(SUP_1, SUP_2);
 
         assertThat(sourceSet.classpath()).as("classpath").hasSize(2);
@@ -129,31 +150,32 @@ class SourceSetTest {
         var matches = List.of(
                 "-analysisPlatform", "jvm",
                 "-apiVersion", "1.0",
-                "-classpath", localPath("classpath1", "classpath2"),
+                "-classpath", localPath(CLASSPATH_1, CLASSPATH_2),
                 "-dependentSourceSets", "moduleName/sourceSetName;moduleName2/sourceSetName2",
                 "-displayName", "name",
                 "-documentedVisibilities", "package;private",
                 "-externalDocumentationLinks", "url1^packageListUrl1^^url2^packageListUrl2",
                 "-jdkVersion", "18",
-                "-includes", localPath("includes1", "includes2", "includes3", "includes4"),
+                "-includes", localPath(INCLUDES_1, INCLUDES_2, INCLUDES_3, INCLUDES_4),
                 "-languageVersion", "2.0",
-                "-noJdkLink", "true",
-                "-noSkipEmptyPackages", "true",
-                "-noStdlibLink", "true",
-                "-reportUndocumented", "true",
-                "-perPackageOptions", "options1;options2",
+                "-noJdkLink",
+                "-noSkipEmptyPackages",
+                "-noStdlibLink",
+                "-reportUndocumented",
+                "-perPackageOptions", OPTION_1 + ';' + OPTION_2,
                 "-samples", localPath(SAMPLES_1, SAMPLES_2),
-                "-skipDeprecated", "true",
-                "-src", localPath("src1", "src2", "src3", "src4"),
-                "-srcLink", localPath("path2") + "=remote2#suffix2;path1=remote1#suffix1",
+                "-skipDeprecated",
+                "-src", localPath(SRC_1, SRC_2, SRC_3, SRC_4),
+                "-srcLink", localPath(PATH_2) + "=remote2#suffix2;path1=remote1#suffix1",
                 "-sourceSetName", "setName",
+
                 "-suppressedFiles", localPath(SUP_1, SUP_2));
 
         assertThat(params).hasSize(matches.size());
 
         IntStream.range(0, params.size()).forEach(i -> assertThat(params.get(i)).isEqualTo(matches.get(i)));
 
-        sourceSet.classpath(List.of(new File("classpath1"), new File("classpath2")));
+        sourceSet.classpath(List.of(new File(CLASSPATH_1), new File(CLASSPATH_2)));
 
         IntStream.range(0, params.size()).forEach(i -> assertThat(params.get(i)).isEqualTo(matches.get(i)));
     }