docs: protected AbstractRule getMemberRule(CodeElementExtractor.ElementDescription description) {
  		for (final Assignment assignment : GrammarUtil.containedAssignments(description.getGrammarComponent())) {
  			if (Objects.equals(getCodeBuilderConfig().getMemberCollectionExtensionGrammarName(), assignment.getFeature())) {
  				if (assignment.getTerminal() instanceof RuleCall) {
  					return ((RuleCall) assignment.getTerminal()).getRule();
  				}
  			}
  		}
  		return null;
  	}