@Override
            protected File createWorkDir(File pluginArtifactFile) throws IOException {
                File workDir = new File(pluginFile.getParentFile(), ".work"); //$NON-NLS-1$
                workDir.mkdirs();
                return workDir;
            }
Creates a plugin classloader for the given plugin file.
manager/api/core/src/main/java/io/apiman/manager/api/core/plugin/AbstractPluginRegistry.java