Bug 120340 [implementation] Ensure IEditorInput.getAdapter(IJavaElement.class) works
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/JavaUI.java
* 
	 * @since 2.0
	 */
	public static final String ID_OPEN_ACTION_SET= "org.eclipse.jdt.ui.A_OpenActionSet"; 
	/**
	 * The id of the Java Search action set
	 * (value <code>org.eclipse.jdt.ui.SearchActionSet"</code>).
	 * 
	 * @since 2.0
	 */
	public static final String ID_SEARCH_ACTION_SET= "org.eclipse.jdt.ui.SearchActionSet"; 
	
	/**
	 * The editor part id of the editor that presents Java compilation units
	 * (value <code>"org.eclipse.jdt.ui.CompilationUnitEditor"</code>).
	 */	
	public static final String ID_CU_EDITOR=			"org.eclipse.jdt.ui.CompilationUnitEditor"; 
	
	/**
	 * The editor part id of the editor that presents Java binary class files
	 * (value <code>"org.eclipse.jdt.ui.ClassFileEditor"</code>).
	 */
	public static final String ID_CF_EDITOR=			"org.eclipse.jdt.ui.ClassFileEditor"; 
	
	/**
	 * The editor part id of the code snippet editor
	 * (value <code>"org.eclipse.jdt.ui.SnippetEditor"</code>).
	 */
	public static final String ID_SNIPPET_EDITOR= 		"org.eclipse.jdt.ui.SnippetEditor"; 
	/**