public static boolean isMethodUsage(PsiElement element) {
    if (element instanceof GrEnumConstant) return true;
    if (!(element instanceof GrReferenceElement)) return false;
    PsiElement parent = element.getParent();
    if (parent instanceof GrCall) {
      return true;
    }
    else if (parent instanceof GrAnonymousClassDefinition) {
      return element.equals(((GrAnonymousClassDefinition)parent).getBaseClassReferenceGroovy());
    }
    return false;
  }
public static boolean isMethodUsage(PsiElement element)