docs: protected void doCheckMemberFeatureCallMapping(XAbstractFeatureCall featureCall,
  			Procedure3<? super EObject, ? super JvmType, ? super String> typeErrorHandler,
  			Function2<? super EObject, ? super JvmIdentifiableElement, ? extends Boolean> featureErrorHandler) {
  		final XAbstractFeatureCall rootFeatureCall = Utils.getRootFeatureCall(featureCall);
  		final Map<Object, Object> context = getContext().getContext();
  		if (isCheckedFeatureCall(context, rootFeatureCall)) {
  			// One of the containing expressions was already checked.
  			return;
  		}
  		// Mark the root container as validated.
  		setCheckedFeatureCall(context, rootFeatureCall);
  		// Validate the current call.
  		internalCheckMemberFeaturCallMapping(rootFeatureCall, typeErrorHandler, featureErrorHandler);
  	}