}
public void setBuilders(final KeywordQueryParser keywordParser) {
this.setBuilder(TopLevelQueryNode.class, new TopLevelQueryNodeBuilder());
this.setBuilder(NodeQueryNode.class, new NodeQueryNodeBuilder(keywordParser));
this.setBuilder(ModifierQueryNode.class, new ModifierQueryNodeBuilder());
this.setBuilder(DescendantQueryNode.class, new ModifierQueryNodeBuilder());
this.setBuilder(ChildQueryNode.class, new ModifierQueryNodeBuilder());
this.setBuilder(BooleanQueryNode.class, new BooleanQueryNodeBuilder());
this.setBuilder(TwigQueryNode.class, new TwigQueryNodeBuilder(keywordParser));
}