Bug 38570 Source generation wizards; Add button to open preference page
M1 The Getter/Setter wizard should offer an access to the Code Generation Preference page: Field prefix/suffix, getter/setter body content, method comment template Add delegate, constructor and override could have a button for the method comment template The code to open a preference page programatically can be copied from TodoTaskPropertyPage.showPreferencePage
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/AddUnimplementedConstructorsAction.java
/*
		 * @see ITreeContentProvider#hasChildren(Object)
		 */
		public boolean hasChildren(Object element) {
			return getChildren(element).length > 0;
		}
		
				
		/*
		 * @see IStructuredContentProvider#getElements(Object)
		 */
		public Object[] getElements(Object inputElement) {
			return fMethodsList;
		}
		
		
		/*
		 * @see IContentProvider#dispose()
		 */
		public void dispose() {
		}
		/*
		 * @see IContentProvider#inputChanged(Viewer, Object, Object)
		 */
		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
		}
									
	}
	
	private static class AddUnimplementedConstructorsValidator implements ISelectionStatusValidator {