diff --git a/.idea/misc.xml b/.idea/misc.xml
index b386dc0..4e456d4 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,7 +1,18 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="EntryPointsManager">
+    <entry_points version="2.0">
+      <entry_point TYPE="field" FQNAME="rife.bld.extension.kotlin.CompilerPlugin ALL_OPEN" />
+      <entry_point TYPE="field" FQNAME="rife.bld.extension.kotlin.CompilerPlugin ASSIGNMENT" />
+      <entry_point TYPE="field" FQNAME="rife.bld.extension.kotlin.CompilerPlugin KOTLIN_SERIALIZATION" />
+      <entry_point TYPE="field" FQNAME="rife.bld.extension.kotlin.CompilerPlugin LOMBOK" />
+      <entry_point TYPE="field" FQNAME="rife.bld.extension.kotlin.CompilerPlugin NOARG" />
+      <entry_point TYPE="field" FQNAME="rife.bld.extension.kotlin.CompilerPlugin POWER_ASSERT" />
+      <entry_point TYPE="field" FQNAME="rife.bld.extension.kotlin.CompilerPlugin SAM_WITH_RECEIVER" />
+    </entry_points>
     <pattern value="rife.bld.extension.CompileKotlinOperationBuild" method="pmd" />
+    <pattern value="rife.bld.extension.kotlin.CompilerPlugin" />
+    <pattern value="rife.bld.extension.kotlin.CompilerPlugin" method="CompilerPlugin" />
   </component>
   <component name="PDMPlugin">
     <option name="customRuleSets">
diff --git a/lib/bld/bld-wrapper.properties b/lib/bld/bld-wrapper.properties
index aea9055..80d6f54 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:1.1.0
+bld.repositories=MAVEN_CENTRAL,MAVEN_LOCAL,RIFE2_SNAPSHOTS,RIFE2_RELEASES
 bld.sourceDirectories=
 bld.version=1.9.1
diff --git a/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java b/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java
index fa05161..a8a594f 100644
--- a/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java
+++ b/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java
@@ -39,6 +39,7 @@ public class CompileKotlinOperationBuild extends Project {
 
         downloadSources = true;
         autoDownloadPurge = true;
+
         repositories = List.of(MAVEN_LOCAL, MAVEN_CENTRAL, RIFE2_RELEASES);
 
         var kotlin = version(2, 0, 0);
diff --git a/src/main/java/rife/bld/extension/CompileKotlinOperation.java b/src/main/java/rife/bld/extension/CompileKotlinOperation.java
index cc28873..45aa507 100644
--- a/src/main/java/rife/bld/extension/CompileKotlinOperation.java
+++ b/src/main/java/rife/bld/extension/CompileKotlinOperation.java
@@ -25,7 +25,10 @@ import rife.tools.FileUtils;
 
 import java.io.File;
 import java.io.IOException;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -50,7 +53,7 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     private BaseProject project_;
 
     /**
-     * Returns the list of JARs contained in a given directory.
+     * Returns the list of Java archives contained in a given directory.
      *
      * @param directory the directory
      * @param regex     the regular expression to match
@@ -131,14 +134,14 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
      * @return this operation instance
      */
     public CompileKotlinOperation compileMainClasspath(String... classpath) {
-        Collections.addAll(compileMainClasspath_, classpath);
+        compileMainClasspath_.addAll(List.of(classpath));
         return this;
     }
 
     /**
-     * Provides a list of entries for the main compilation classpath.
+     * Provides the entries for the main compilation classpath.
      *
-     * @param classpath a list of classpath entries
+     * @param classpath the classpath entries
      * @return this operation instance
      */
     public CompileKotlinOperation compileMainClasspath(Collection<String> classpath) {
@@ -147,16 +150,16 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     }
 
     /**
-     * Retrieves the list of entries for the main compilation classpath.
+     * Retrieves the entries for the main compilation classpath.
      *
-     * @return the list of classpath
+     * @return the classpath entries
      */
     public Collection<String> compileMainClasspath() {
         return compileMainClasspath_;
     }
 
     /**
-     * Retrieves the list of compilation options for the compiler.
+     * Retrieves the compilation options for the compiler.
      *
      * @return the compilation options
      */
@@ -165,7 +168,7 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     }
 
     /**
-     * Provides a list of compilation options to pass to the Kotlin compiler.
+     * Provides the compilation options to pass to the Kotlin compiler.
      *
      * @param options the compiler options
      * @return this operation instance
@@ -182,14 +185,14 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
      * @return this operation instance
      */
     public CompileKotlinOperation compileTestClasspath(String... classpath) {
-        Collections.addAll(compileTestClasspath_, classpath);
+        compileTestClasspath_.addAll(List.of(classpath));
         return this;
     }
 
     /**
-     * Provides a list of entries for the test compilation classpath.
+     * Provides the entries for the test compilation classpath.
      *
-     * @param classpath a list of classpath entries
+     * @param classpath the classpath entries
      * @return this operation instance
      */
     public CompileKotlinOperation compileTestClasspath(Collection<String> classpath) {
@@ -200,7 +203,7 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     /**
      * Retrieves the entries for the test compilation classpath.
      *
-     * @return the list of classpath
+     * @return the classpath entries
      */
     public Collection<String> compileTestClasspath() {
         return compileTestClasspath_;
@@ -375,7 +378,7 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
      * @return this operation instance
      */
     public CompileKotlinOperation mainSourceDirectories(File... directories) {
-        Collections.addAll(mainSourceDirectories_, directories);
+        mainSourceDirectories_.addAll(List.of(directories));
         return this;
     }
 
@@ -386,16 +389,14 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
      * @return this operation instance
      */
     public CompileKotlinOperation mainSourceDirectories(String... directories) {
-        Collections.addAll(mainSourceDirectories_, Arrays.stream(directories)
-                .map(File::new)
-                .toArray(File[]::new));
+        mainSourceDirectories_.addAll(Arrays.stream(directories).map(File::new).toList());
         return this;
     }
 
     /**
-     * Provides a list of main source directories that should be compiled.
+     * Provides the main source directories that should be compiled.
      *
-     * @param directories a list of main source directories
+     * @param directories the main source directories
      * @return this operation instance
      */
     public CompileKotlinOperation mainSourceDirectories(Collection<File> directories) {
@@ -406,40 +407,38 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     /**
      * Retrieves the main source directories that should be compiled.
      *
-     * @return the list of directories
+     * @return the main source directories
      */
     public Collection<File> mainSourceDirectories() {
         return mainSourceDirectories_;
     }
 
     /**
-     * Provides main files that should be compiled.
+     * Provides main source files that should be compiled.
      *
-     * @param files one or more main files
+     * @param files one or more main source files
      * @return this operation instance
      */
     public CompileKotlinOperation mainSourceFiles(File... files) {
-        mainSourceFiles_.addAll(Arrays.asList(files));
+        mainSourceFiles_.addAll(List.of(files));
         return this;
     }
 
     /**
-     * Provides main files that should be compiled.
+     * Provides main source files that should be compiled.
      *
-     * @param files one or more main files
+     * @param files one or more main source files
      * @return this operation instance
      */
     public CompileKotlinOperation mainSourceFiles(String... files) {
-        Collections.addAll(mainSourceFiles_, Arrays.stream(files)
-                .map(File::new)
-                .toArray(File[]::new));
+        mainSourceFiles_.addAll(Arrays.stream(files).map(File::new).toList());
         return this;
     }
 
     /**
-     * Provides a list of main files that should be compiled.
+     * Provides the main source files that should be compiled.
      *
-     * @param files a list of main files
+     * @param files the main source files
      * @return this operation instance
      */
     public CompileKotlinOperation mainSourceFiles(Collection<File> files) {
@@ -450,7 +449,7 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     /**
      * Retrieves the main files that should be compiled.
      *
-     * @return the list of files
+     * @return the files
      */
     public Collection<File> mainSourceFiles() {
         return mainSourceFiles_;
@@ -463,14 +462,14 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
      * @return this class instance
      */
     public CompileKotlinOperation plugins(String... plugins) {
-        Collections.addAll(plugins_, plugins);
+        plugins_.addAll(List.of(plugins));
         return this;
     }
 
     /**
      * Retrieves the compiler plugins.
      *
-     * @return the list of plugins
+     * @return the compiler plugins
      */
     public Collection<String> plugins() {
         return plugins_;
@@ -479,7 +478,7 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     /**
      * Provides compiler plugins.
      *
-     * @param plugins a list of plugins
+     * @param plugins the compiler plugins
      * @return this class instance
      */
     public CompileKotlinOperation plugins(Collection<String> plugins) {
@@ -517,7 +516,7 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     /**
      * Provides compiler plugins.
      *
-     * @param jars    the list of plugin JARs
+     * @param jars    the plugins Java archives
      * @param plugins one or more plugins
      * @return this class instance
      */
@@ -548,7 +547,7 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
      * @return this operation instance
      */
     public CompileKotlinOperation testSourceDirectories(File... directories) {
-        Collections.addAll(testSourceDirectories_, directories);
+        testSourceDirectories_.addAll(List.of(directories));
         return this;
     }
 
@@ -559,16 +558,14 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
      * @return this operation instance
      */
     public CompileKotlinOperation testSourceDirectories(String... directories) {
-        Collections.addAll(testSourceDirectories_, Arrays.stream(directories)
-                .map(File::new)
-                .toArray(File[]::new));
+        testSourceDirectories_.addAll(Arrays.stream(directories).map(File::new).toList());
         return this;
     }
 
     /**
-     * Provides a list of test source directories that should be compiled.
+     * Provides the test source directories that should be compiled.
      *
-     * @param directories a list of test source directories
+     * @param directories the test source directories
      * @return this operation instance
      */
     public CompileKotlinOperation testSourceDirectories(Collection<File> directories) {
@@ -579,40 +576,38 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     /**
      * Retrieves the test source directories that should be compiled.
      *
-     * @return the list of directories
+     * @return the test source directories
      */
     public Collection<File> testSourceDirectories() {
         return testSourceDirectories_;
     }
 
     /**
-     * Provides test files that should be compiled.
+     * Provides test source files that should be compiled.
      *
-     * @param files one or more test files
+     * @param files one or more test source files
      * @return this operation instance
      */
     public CompileKotlinOperation testSourceFiles(File... files) {
-        testSourceFiles_.addAll(Arrays.asList(files));
+        testSourceFiles_.addAll(List.of(files));
         return this;
     }
 
     /**
-     * Provides test files that should be compiled.
+     * Provides the test sources files that should be compiled.
      *
-     * @param files one or more test files
+     * @param files one or more test source files
      * @return this operation instance
      */
     public CompileKotlinOperation testSourceFiles(String... files) {
-        Collections.addAll(testSourceFiles_, Arrays.stream(files)
-                .map(File::new)
-                .toArray(size -> new File[files.length]));
+        testSourceFiles_.addAll(Arrays.stream(files).map(File::new).toList());
         return this;
     }
 
     /**
-     * Provides a list of test files that should be compiled.
+     * Provides the test source files that should be compiled.
      *
-     * @param files a list of test files
+     * @param files the test source files
      * @return this operation instance
      */
     public CompileKotlinOperation testSourceFiles(Collection<File> files) {
@@ -623,7 +618,7 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     /**
      * Retrieves the test files that should be compiled.
      *
-     * @return the list of files
+     * @return the test files
      */
     public Collection<File> testSourceFiles() {
         return testSourceFiles_;
diff --git a/src/main/java/rife/bld/extension/kotlin/CompileOptions.java b/src/main/java/rife/bld/extension/kotlin/CompileOptions.java
index 7703105..eb1fb70 100644
--- a/src/main/java/rife/bld/extension/kotlin/CompileOptions.java
+++ b/src/main/java/rife/bld/extension/kotlin/CompileOptions.java
@@ -19,7 +19,10 @@ package rife.bld.extension.kotlin;
 import rife.bld.extension.CompileKotlinOperation;
 
 import java.io.File;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
 import java.util.stream.Collectors;
 
 import static rife.bld.extension.CompileKotlinOperation.isNotBlank;
@@ -65,14 +68,14 @@ public class CompileOptions {
      * @return this operation instance
      */
     public CompileOptions advancedOptions(String... options) {
-        Collections.addAll(advancedOptions_, options);
+        advancedOptions_.addAll(List.of(options));
         return this;
     }
 
     /**
      * Specify advanced compiler options.
      *
-     * @param options list of compiler options
+     * @param options the compiler options
      * @return this operation instance
      */
     public CompileOptions advancedOptions(Collection<String> options) {
@@ -130,9 +133,7 @@ public class CompileOptions {
      * @return this operation instance
      */
     public CompileOptions argFile(String... files) {
-        Collections.addAll(argFile_, Arrays.stream(files)
-                .map(File::new)
-                .toArray(File[]::new));
+        argFile_.addAll(Arrays.stream(files).map(File::new).toList());
         return this;
     }
 
@@ -155,7 +156,7 @@ public class CompileOptions {
      * @return this operation instance
      */
     public CompileOptions argFile(File... files) {
-        Collections.addAll(argFile_, files);
+        argFile_.addAll(List.of(files));
         return this;
     }
 
@@ -163,7 +164,7 @@ public class CompileOptions {
     /**
      * Read the compiler options from the given files.
      *
-     * @param files the list of files
+     * @param files the compiler options files
      * @return this operation instance
      * @see #argFile(String...)
      */
@@ -175,7 +176,7 @@ public class CompileOptions {
     /**
      * Retrieves the files containing compiler options.
      *
-     * @return the list of files
+     * @return the compiler options files
      */
     public Collection<File> argFile() {
         return argFile_;
@@ -343,9 +344,7 @@ public class CompileOptions {
      * @return this operation instance
      */
     public CompileOptions classpath(String... paths) {
-        Collections.addAll(classpath_, Arrays.stream(paths)
-                .map(File::new)
-                .toArray(File[]::new));
+        classpath_.addAll(Arrays.stream(paths).map(File::new).toList());
         return this;
     }
 
@@ -358,7 +357,7 @@ public class CompileOptions {
      * @return this operation instance
      */
     public CompileOptions classpath(File... paths) {
-        Collections.addAll(classpath_, paths);
+        classpath_.addAll(List.of(paths));
         return this;
     }
 
@@ -367,7 +366,7 @@ public class CompileOptions {
      * <p>
      * The classpath can contain file and directory paths, ZIP, or JAR files.
      *
-     * @param paths the list of paths
+     * @param paths the search paths
      * @return this operation instance
      */
     public CompileOptions classpath(Collection<File> paths) {
@@ -378,7 +377,7 @@ public class CompileOptions {
     /**
      * Retrieves the class files classpath.
      *
-     * @return the list of classpath
+     * @return the class files classpath
      */
     public Collection<File> classpath() {
         return classpath_;
@@ -493,23 +492,23 @@ public class CompileOptions {
      * @return this operation instance
      */
     public CompileOptions jvmOptions(String... jvmOptions) {
-        Collections.addAll(jvmOptions_, jvmOptions);
+        jvmOptions_.addAll(List.of(jvmOptions));
         return this;
     }
 
     /**
-     * Retrieves the JVM options.
+     * Retrieves the Java Virtual Machine options.
      *
-     * @return the list of options
+     * @return the JVM options
      */
     public Collection<String> jvmOptions() {
         return jvmOptions_;
     }
 
     /**
-     * Pass an option directly to JVM
+     * Pass an option directly to Java Virtual Machine
      *
-     * @param jvmOptions the list JVM options
+     * @param jvmOptions the JVM options
      * @return this operation instance
      */
     public CompileOptions jvmOptions(Collection<String> jvmOptions) {
@@ -638,14 +637,14 @@ public class CompileOptions {
      * @return this operation instance
      */
     public CompileOptions optIn(String... annotations) {
-        Collections.addAll(optIn_, annotations);
+        optIn_.addAll(List.of(annotations));
         return this;
     }
 
     /**
      * Retrieves the opt-in fully qualified names.
      *
-     * @return the list of fully qualified names
+     * @return the fully qualified names
      */
     public Collection<String> optIn() {
         return optIn_;
@@ -654,7 +653,7 @@ public class CompileOptions {
     /**
      * Enable usages of API that requires opt-in with a requirement annotation with the given fully qualified name.
      *
-     * @param annotations list of annotation names
+     * @param annotations the annotation names
      * @return this operation instance
      */
     public CompileOptions optIn(Collection<String> annotations) {
@@ -669,14 +668,14 @@ public class CompileOptions {
      * @return this operation instance
      */
     public CompileOptions options(String... options) {
-        Collections.addAll(options_, options);
+        options_.addAll(List.of(options));
         return this;
     }
 
     /**
      * Retrieves additional compiler options.
      *
-     * @return the list of options
+     * @return the compiler options
      */
     public Collection<String> options() {
         return options_;
@@ -685,7 +684,7 @@ public class CompileOptions {
     /**
      * Specify additional compiler options.
      *
-     * @param options list of compiler options
+     * @param options the compiler options
      * @return this operation instance
      */
     public CompileOptions options(Collection<String> options) {
@@ -735,7 +734,7 @@ public class CompileOptions {
     /**
      * Retrieves the plugin options.
      *
-     * @return the list ofoptions.
+     * @return the plugin ofoptions.
      */
     public Collection<String> plugin() {
         return plugin_;
@@ -761,14 +760,14 @@ public class CompileOptions {
      * @return this operation instance
      */
     public CompileOptions scriptTemplates(String... classNames) {
-        Collections.addAll(scriptTemplates_, classNames);
+        scriptTemplates_.addAll(List.of(classNames));
         return this;
     }
 
     /**
      * Retrieves the script templates.
      *
-     * @return the list of templates.
+     * @return the script templates.
      */
     public Collection<String> scriptTemplates() {
         return scriptTemplates_;
@@ -779,7 +778,7 @@ public class CompileOptions {
      * <p>
      * Use fully qualified class names.
      *
-     * @param classNames the list class names
+     * @param classNames the class names
      * @return this operation instance
      */
     public CompileOptions scriptTemplates(Collection<String> classNames) {
diff --git a/src/test/java/rife/bld/extension/CompileKotlinOperationTest.java b/src/test/java/rife/bld/extension/CompileKotlinOperationTest.java
index f64e6d3..45c8580 100644
--- a/src/test/java/rife/bld/extension/CompileKotlinOperationTest.java
+++ b/src/test/java/rife/bld/extension/CompileKotlinOperationTest.java
@@ -18,7 +18,10 @@ package rife.bld.extension;
 
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
+import rife.bld.Project;
 import rife.bld.blueprints.BaseProjectBlueprint;
+import rife.bld.extension.kotlin.CompileOptions;
+import rife.bld.extension.kotlin.CompilerPlugin;
 import rife.tools.FileUtils;
 
 import java.io.File;
@@ -26,6 +29,7 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.ConsoleHandler;
@@ -46,6 +50,48 @@ class CompileKotlinOperationTest {
         logger.setUseParentHandlers(false);
     }
 
+    @Test
+    void testCollections() {
+        var op = new CompileKotlinOperation()
+                .fromProject(new Project())
+                .compileMainClasspath("path1", "path2")
+                .compileOptions(new CompileOptions().jdkRelease("17").verbose(true))
+                .mainSourceDirectories("dir1", "dir2")
+                .mainSourceDirectories(List.of(new File("dir3"), new File("dir4")))
+                .mainSourceFiles("file1", "file2")
+                .mainSourceFiles(List.of(new File("file3"), new File("file4")))
+                .mainSourceFiles(new File("file5"), new File("file6"))
+                .testSourceDirectories("tdir1", "tdir2")
+                .testSourceDirectories(List.of(new File("tdir3"), new File("tdir4")))
+                .testSourceFiles("tfile1", "tfile2")
+                .testSourceFiles(List.of(new File("tfile3"), new File("tfile4")))
+                .testSourceFiles(new File("tfile5"), new File("tfile6"))
+                .plugins("plugin1", "plugin2")
+                .plugins(CompilerPlugin.KOTLIN_SERIALIZATION, CompilerPlugin.ASSIGNMENT)
+                .plugins(new File("lib/compile"), CompilerPlugin.LOMBOK, CompilerPlugin.POWER_ASSERT)
+                .plugins(List.of("plugin3", "plugin4"))
+                .plugins(Arrays.stream(Objects.requireNonNull(new File("lib/compile").listFiles())).toList(),
+                        CompilerPlugin.ALL_OPEN, CompilerPlugin.SAM_WITH_RECEIVER);
+
+        assertThat(op.compileMainClasspath()).as("compileMainClassPath")
+                .containsAll(List.of("path1", "path2"));
+        assertThat(op.compileOptions().hasRelease()).as("hasRelease").isTrue();
+        assertThat(op.compileOptions().isVerbose()).as("isVerbose").isTrue();
+        assertThat(op.mainSourceDirectories()).as("mainSourceDirectories").containsExactly(
+                Path.of("src", "main", "kotlin").toFile().getAbsoluteFile(), new File("dir1"),
+                new File("dir2"), new File("dir3"), new File("dir4"));
+        assertThat(op.testSourceDirectories()).as("testSourceDirectories").containsOnly(
+                Path.of("src", "test", "kotlin").toFile().getAbsoluteFile(), new File("tdir1"),
+                new File("tdir2"), new File("tdir3"), new File("tdir4"));
+        assertThat(op.mainSourceFiles()).as("mainSourceFiles").containsOnly(
+                new File("file1"), new File("file2"), new File("file3"),
+                new File("file4"), new File("file5"), new File("file6"));
+        assertThat(op.testSourceFiles()).as("testSourceFiles").containsOnly(
+                new File("tfile1"), new File("tfile2"), new File("tfile3"),
+                new File("tfile4"), new File("tfile5"), new File("tfile6"));
+        assertThat(op.plugins()).hasSize(10);
+    }
+
     @Test
     void testExecute() throws IOException {
         var tmpDir = Files.createTempDirectory("bld-kotlin").toFile();
diff --git a/src/test/java/rife/bld/extension/CompileKotlinOptionsTest.java b/src/test/java/rife/bld/extension/kotlin/CompileOptionsTest.java
similarity index 56%
rename from src/test/java/rife/bld/extension/CompileKotlinOptionsTest.java
rename to src/test/java/rife/bld/extension/kotlin/CompileOptionsTest.java
index 5c075fb..25df90b 100644
--- a/src/test/java/rife/bld/extension/CompileKotlinOptionsTest.java
+++ b/src/test/java/rife/bld/extension/kotlin/CompileOptionsTest.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package rife.bld.extension;
+package rife.bld.extension.kotlin;
 
 import org.junit.jupiter.api.Test;
 
@@ -23,61 +23,39 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
+import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
 @SuppressWarnings("PMD.AvoidDuplicateLiterals")
-class CompileKotlinOptionsTest {
-    @Test
-    void argsCollectionTest() {
-        var args = new CompileKotlinOptions()
-                .advancedOptions(List.of("Xoption1", "Xoption2"))
-                .argFile(List.of("arg1.txt", "arg2.txt"))
-                .classpath(List.of("path1", "path2"))
-                .jvmOptions(List.of("option1", "option2"))
-                .noStdLib(false)
-                .optIn(List.of("opt1", "opt2"))
-                .options(List.of("-foo", "-bar"))
-                .scriptTemplates(List.of("temp1", "temp2"))
-                .args();
-        var matches = List.of(
-                "@arg1.txt", "@arg2.txt",
-                "-classpath", "path1:path2",
-                "-Joption1", "-Joption2",
-                "-opt-in", "opt1",
-                "-opt-in", "opt2",
-                "-foo", "-bar",
-                "-script-templates",
-                "temp1,temp2",
-                "-XXoption1", "-XXoption2");
-
-        for (var arg : args) {
-            var found = false;
-            for (var match : matches) {
-                if (match.equals(arg)) {
-                    found = true;
-                    break;
-                }
-            }
-            assertThat(found).as(arg).isTrue();
-        }
+class CompileOptionsTest {
+    /**
+     * Returns the local path of the given file names.
+     *
+     * @param fileNames The file names
+     * @return the local path
+     */
+    private String localPath(String... fileNames) {
+        return Arrays.stream(fileNames).map(it -> new File(it).getAbsolutePath())
+                .collect(Collectors.joining(File.pathSeparator));
     }
 
-
     @Test
-    void argsTest() {
-        var options = new CompileKotlinOptions()
+    @SuppressWarnings("PMD.JUnitTestsShouldIncludeAssert")
+    void testArgs() {
+        var options = new CompileOptions()
                 .apiVersion("11")
-                .argFile("file.txt", "file2.txt")
-                .classpath("path1", "path2")
+                .argFile(new File("file.txt"), new File("file2.txt"))
+                .classpath(new File("path1"), new File("path2"))
                 .javaParameters(true)
                 .jvmTarget("11")
                 .includeRuntime(true)
-                .jdkHome("path")
+                .jdkHome(new File("path"))
                 .jdkRelease("11")
-                .kotlinHome("path")
+                .kotlinHome(new File("path"))
                 .languageVersion("1.0")
                 .moduleName("module")
                 .noJdk(true)
@@ -94,14 +72,14 @@ class CompileKotlinOptionsTest {
 
         var matches = List.of(
                 "-api-version", "11",
-                "@file.txt", "@file2.txt",
-                "-classpath", "path1" + File.pathSeparator + "path2",
+                "@" + localPath("file.txt"), "@" + localPath("file2.txt"),
+                "-classpath", localPath("path1", "path2"),
                 "-java-parameters",
                 "-jvm-target", "11",
                 "-include-runtime",
-                "-jdk-home", "path",
+                "-jdk-home", localPath("path"),
                 "-Xjdk-release=11",
-                "-kotlin-home", "path",
+                "-kotlin-home", localPath("path"),
                 "-language-version", "1.0",
                 "-module-name", "module",
                 "-no-jdk",
@@ -111,7 +89,7 @@ class CompileKotlinOptionsTest {
                 "-opt-in", "opt2",
                 "-foo",
                 "-bar",
-                "-d", "path",
+                "-d", localPath("path"),
                 "-P", "plugin:id:name:value",
                 "-progressive",
                 "-script-templates", "name,name2",
@@ -123,18 +101,86 @@ class CompileKotlinOptionsTest {
         args.add(options.apiVersion(11).jvmTarget(11).args());
 
         for (var a : args) {
-            assertThat(a).hasSize(matches.size());
             IntStream.range(0, a.size()).forEach(i -> assertThat(a.get(i)).isEqualTo(matches.get(i)));
         }
     }
 
     @Test
-    void checkAllParamsTest() throws IOException {
+    void testArgsCollections() {
+        var advanceOptions = List.of("Xoption1", "Xoption2");
+        var argFile = List.of(new File("arg1.txt"), new File("arg2.txt"));
+        var classpath = List.of(new File("path1"), new File("path2"));
+        var jvmOptions = List.of("option1", "option2");
+        var optIn = List.of("opt1", "opt2");
+        var options = List.of("-foo", "-bar");
+        var plugin = List.of("id:name:value", "id2:name2:value2");
+        var scriptTemplates = List.of("temp1", "temp2");
+
+        var op = new CompileOptions()
+                .advancedOptions(advanceOptions)
+                .argFile(argFile)
+                .classpath(classpath)
+                .jvmOptions(jvmOptions)
+                .noStdLib(false)
+                .optIn(optIn)
+                .options(options)
+                .scriptTemplates(scriptTemplates);
+
+        plugin.forEach(it -> {
+            var p = it.split(":");
+            op.plugin(p[0], p[1], p[2]);
+        });
+
+        assertThat(op.advancedOptions()).as("advancedOptions")
+                .hasSize(advanceOptions.size()).containsAll(advanceOptions);
+        assertThat(op.argFile()).as("argFile")
+                .hasSize(argFile.size()).containsAll(argFile);
+        assertThat(op.classpath()).as("classpath")
+                .hasSize(classpath.size()).containsAll(classpath);
+        assertThat(op.jvmOptions()).as("jvmOptions")
+                .hasSize(jvmOptions.size()).containsAll(jvmOptions);
+        assertThat(op.optIn()).as("optIn")
+                .hasSize(optIn.size()).containsAll(optIn);
+        assertThat(op.options()).as("options")
+                .hasSize(options.size()).containsAll(options);
+        assertThat(op.plugin()).as("plugin")
+                .hasSize(plugin.size()).containsAll(plugin);
+        assertThat(op.scriptTemplates()).as("scriptTemplates")
+                .hasSize(scriptTemplates.size()).containsAll(scriptTemplates);
+
+        var matches = List.of(
+                '@' + localPath("arg1.txt"), '@' + localPath("arg2.txt"),
+                "-classpath", localPath("path1", "path2"),
+                "-Joption1", "-Joption2",
+                "-opt-in", "opt1",
+                "-opt-in", "opt2",
+                "-foo", "-bar",
+                "-script-templates",
+                "temp1,temp2",
+                "-XXoption1", "-XXoption2",
+                "-P", "plugin:id:name:value",
+                "-P", "plugin:id2:name2:value2");
+
+        var args = op.args();
+        for (var arg : args) {
+            var found = false;
+            for (var match : matches) {
+                if (match.equals(arg)) {
+                    found = true;
+                    break;
+                }
+            }
+            assertThat(found).as(arg).isTrue();
+        }
+    }
+
+    @Test
+    void testCheckAllParams() throws IOException {
         var args = Files.readAllLines(Paths.get("src", "test", "resources", "kotlinc-args.txt"));
 
         assertThat(args).isNotEmpty();
 
-        var params = new CompileKotlinOptions()
+        var params = new CompileOptions()
                 .advancedOptions("Xoption")
                 .argFile("file")
                 .classpath("classpath")
@@ -152,7 +198,7 @@ class CompileKotlinOptionsTest {
                 .noWarn(true)
                 .optIn("annotation")
                 .options("option")
-                .path("path")
+                .path(new File("path"))
                 .plugin("id", "option", "value")
                 .progressive(true)
                 .scriptTemplates("template")