Bug 31473 Search Engine should not search in working copies that aren't on the build path
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/JavaUI.java
* @since 2.0
	 */
	public static final String ID_CODING_ACTION_SET= "org.eclipse.jdt.ui.CodingActionSet"; 
	/**
	 * The id of the Java action set for open actions
	 * (value <code>"org.eclipse.jdt.ui.A_OpenActionSet"</code>).
	 * 
	 * @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";