code: protected void collectProjectArtifactsAndClasspath( List<Artifact> artifacts, List<Path> theClasspathFiles )
      {
          if ( addResourcesToClasspath )
          {
              for ( Resource r : project.getBuild().getResources() )
              {
                  theClasspathFiles.add( Paths.get( r.getDirectory() ) );
              }
          }
  
          if ( "compile".equals( classpathScope ) )
          {
              artifacts.addAll( project.getCompileArtifacts() );
              if ( addOutputToClasspath )
              {
                  theClasspathFiles.add( Paths.get( project.getBuild().getOutputDirectory() ) );
              }
          }
          else if ( "test".equals( classpathScope ) )
          {
              artifacts.addAll( project.getTestArtifacts() );
              if ( addOutputToClasspath )
              {
                  theClasspathFiles.add( Paths.get( project.getBuild().getTestOutputDirectory() ) );
                  theClasspathFiles.add( Paths.get( project.getBuild().getOutputDirectory() ) );
              }
          }
          else if ( "runtime".equals( classpathScope ) )
          {
              artifacts.addAll( project.getRuntimeArtifacts() );
              if ( addOutputToClasspath )
              {
                  theClasspathFiles.add( Paths.get( project.getBuild().getOutputDirectory() ) );
              }
          }
          else if ( "system".equals( classpathScope ) )
          {
              artifacts.addAll( project.getSystemArtifacts() );
          }
          else
          {
              throw new IllegalStateException( "Invalid classpath scope: " + classpathScope );
          }
  
          getLog().debug( "Collected project artifacts " + artifacts );
          getLog().debug( "Collected project classpath " + theClasspathFiles );
      }
docs: Collects the project artifacts in the specified List and the project specific classpath (build output and build
  test output) Files in the specified List, depending on the plugin classpathScope value.
  
  @param artifacts the list where to collect the scope specific artifacts
  @param theClasspathFiles the list where to collect the scope specific output directories