string getName() Returns extension name.

XPathExpr translateFirstChild(

class PseudoClassExtension extends

callable[] getFunctionTranslators() Returns function translators.

XPathExpr translateCombinedSelector(

XPathExpr translateOnlyChild(

XPathExpr translateFirstOfType(

XPathExpr translateRoot(

interface ExtensionInterface XPath expression translator extension interface. This component

class NodeExtension extends