code: protected boolean isParentAnnotatedWithTraceeContextProvider(final Element element) {
  
          Element parentElement = element.getEnclosingElement();
          if (parentElement == null || parentElement.getKind() != ElementKind.CLASS
                  || !isTypeAnnotatedWithTraceeContextProvider((TypeElement) parentElement)) {
  
              error(element, "Enclosing type of method %s annotated with annotation %s is not annotated with annotation %s.", element.getSimpleName(),
                      Flatten.class.getSimpleName(), TraceeContextProvider.class.getSimpleName());
              return false;
  
          }
  
          return true;
      }
docs: Checks if passed elements parent is type element and annotated with {@link TraceeContextProvider}.
  
  @param element
  @return