docs: private ClassLoader getClassLoader()
          throws MojoExecutionException
      {
          List<URL> classpathURLs = new ArrayList<URL>();
          this.addRelevantPluginDependenciesToClasspath( classpathURLs );
          this.addRelevantProjectDependenciesToClasspath( classpathURLs );
          this.addAdditionalClasspathElements( classpathURLs );
          
          if (outputDirectory.isDirectory()) {
          	// load compiled classes
          	Collection listFiles = FileUtils.listFiles(outputDirectory, new String[]{"class"}, true);
          	for (Object object : listFiles) {
          		if (object instanceof File) {
          			File f = (File) object;
          			if (f.isFile()) {
          				try {
          					classpathURLs.add(f.toURI().toURL());
          				} catch (Exception e) {
          					// TODO: handle exception
          				}
          			}
          		}
          	}
          }
          
          
          return new URLClassLoader( classpathURLs.toArray( new URL[classpathURLs.size()] ) , getClass().getClassLoader());
      }