String installURL = System.getProperty("osgi.install.area");
String installURL = FrameworkProperties.getProperty("osgi.install.area");
	private String getInstallPath() {		String installURL = System.getProperty("osgi.install.area"); //$NON-NLS-1$		if (installURL == null)			return null;		if (!installURL.startsWith("file:")) //$NON-NLS-1$			return null;		// this is the safest way to create a File object off a file: URL		return installURL.substring(5);	}