/**
	 * Returns a File instance representing the directory or file of the given
	 * filename in the Plugin data directory for the plugin with the given id.
	 * @param eclipsePluginId
	 * @param filename
	 * @return
	 */
	public static File getPluginData(String eclipsePluginId, String filename) {
		try {
			System.out.println(new File(".").getAbsolutePath());
			
			Bundle bundle = null;
			try {
				bundle = Platform.getBundle(eclipsePluginId);
				
				URL fileURL = Platform.find(bundle, new Path("data/" + filename));
				URI fileURI = new URI(Platform.resolve(fileURL).toString().replaceAll(" ", "%20"));
				
				return new File(fileURI);
			}
			catch (Throwable e) {
				File dir = new File("." + File.separatorChar + "data");
				LogManager.theInstance().getDefaultLog().warn("Failed to get plugin data directory (not in headless mode ?) using: " + dir.getAbsolutePath());
				return dir;
			}

		}
		catch (Exception e) {
			throw new InternalException("Error creating file '" + filename + 
					"' for plug-in data for plug-in '" + 
					eclipsePluginId + "': " + e.getMessage(), e);
		}
		
	}