Bug 57706 [navigation] expecting an override indicator for overrides in anonymous classes
Currently no override indicator is shown when I override/implement a method in an anonymous class. Given that we show override indicators for normal overrides it is confusing to not see the override indicator in this case.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/OverrideIndicatorManager.java
static final String ANNOTATION_TYPE= "org.eclipse.jdt.ui.overrideIndicator"; 
	private IAnnotationModel fAnnotationModel;
	private Object fAnnotationModelLockObject;
	private Annotation[] fOverrideAnnotations;
	private IJavaElement fJavaElement;
	
	public OverrideIndicatorManager(IAnnotationModel annotationModel, IJavaElement javaElement, CompilationUnit ast) {
		Assert.isNotNull(annotationModel);
		Assert.isNotNull(javaElement);
		
		fJavaElement= javaElement;
		fAnnotationModel=annotationModel; 
		fAnnotationModelLockObject= getLockObject(fAnnotationModel);
		updateAnnotations(ast, new NullProgressMonitor());
	}
	/**
	 * Returns the lock object for the given annotation model.
	 * 
	 * @param annotationModel the annotation model
	 * @return the annotation model's lock object
	 * @since 3.0
	 */
	private Object getLockObject(IAnnotationModel annotationModel) { 
		if (annotationModel instanceof ISynchronizable)
			return ((ISynchronizable)annotationModel).getLockObject();
		else
			return annotationModel;
	}
	/**