docs: protected static Action findAction(EObject grammarComponent, String assignmentName) {
  		for (final Action action : GrammarUtil.containedActions(grammarComponent)) {
  			if (GrammarUtil.isAssignedAction(action)) {
  				if (Objects.equals(assignmentName, action.getFeature())) {
  					return action;
  				}
  			}
  		}
  		return null;
  	}