testSourceSet.setCompileClasspath(project.getObjects().fileCollection().from(configurations.getByName(testSourceSet.getCompileClasspathConfigurationName())));
        testSourceSet.setRuntimeClasspath(project.getObjects().fileCollection().from(testSourceSet.getOutput(), configurations.getByName(testSourceSet.getRuntimeClasspathConfigurationName())));
    }

    @Override
    public void setAnnotationProcessorPath(FileCollection annotationProcessorPath) {
        this.annotationProcessorPath = annotationProcessorPath;
    }

    @Override
    public void setRuntimeClasspath(FileCollection classpath) {
        runtimeClasspath = classpath;
    }

    @Override
    public SourceDirectorySet getJava() {
        return javaSource;
    }

    @Override

     */
    FileCollection getRuntimeClasspath();

    /**
     * Sets the classpath used to execute this source.
     *
     * @param classpath The classpath. Should not be null.
     */
    void setRuntimeClasspath(FileCollection classpath);

    /**
     * {@link SourceSetOutput} is a {@link FileCollection} of all output directories (compiled classes, processed resources, etc.)

            testSourceSet.setCompileClasspath(objectFactory.fileCollection().from(mainSourceSetOutput, testCompileClasspathConfiguration));
            testSourceSet.setRuntimeClasspath(objectFactory.fileCollection().from(testSourceSetOutput, mainSourceSetOutput, testRuntimeClasspathConfiguration));

        jvmPluginServices.configureAsRuntimeClasspath(runtimeClasspathConfiguration);

        sourceSet.setCompileClasspath(compileClasspathConfiguration);
        sourceSet.setRuntimeClasspath(sourceSet.getOutput().plus(runtimeClasspathConfiguration));
        sourceSet.setAnnotationProcessorPath(annotationProcessorConfiguration);
    }