Bug 120340 [implementation] Ensure IEditorInput.getAdapter(IJavaElement.class) works
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/JavaUI.java
* @see IDocumentProvider
	 * @since 2.0
	 */
	public static IDocumentProvider getDocumentProvider() {
		return JavaPlugin.getDefault().getCompilationUnitDocumentProvider();
	}
		
	/**
	 * Sets the Javadoc location for an archive with the given path.
	 * 
	 * @param archivePath the path of the library; this can be an workspace path
	 * or an external path in case of an external library.
	 * @param url the Javadoc location to set. This location should contain index.html and
	 * a file 'package-list'. <code>null</code> clears the current documentation
	 * location.
	 * @deprecated Javadoc is now attached to the classpath entry. 
	 * Evaluate the libraries classpath entry and reconfigure the Javadoc location there.
	 * 
	 * @since 2.0
	 */
	public static void setLibraryJavadocLocation(IPath archivePath, URL url) {
		
	}
	
	/**
	 * Sets the Javadoc locations for archives with the given paths. 
	 * 
	 * @param archivePaths the paths of the libraries. can be workspace paths
	 * or external paths in case of an external library.
	 * @param urls the Javadoc locations to set. Each location corresponds to the archive path of the same index. A location should contain index.html and