How to use the domutils.getParent function in domutils

var DomUtils    = require("domutils"),
    isTag       = DomUtils.isTag,
    getParent   = DomUtils.getParent,
    getChildren = DomUtils.getChildren,
    getSiblings = DomUtils.getSiblings,
    getName     = DomUtils.getName;

/*
	all available rules
*/
module.exports = {
	__proto__: null,

	attribute: require("./attributes.js").compile,
	pseudo: require("./pseudos.js").compile,

	//tags
	tag: function(next, data){
		var name = data.name;

function includesScopePseudo(t){
    return t.type === "pseudo" && (
        t.name === "scope" || (
            Array.isArray(t.data) &&
            t.data.some(function(data){
                return data.some(includesScopePseudo);
            })
        )
    );
}

var DESCENDANT_TOKEN = {type: "descendant"},
    SCOPE_TOKEN = {type: "pseudo", name: "scope"},
    PLACEHOLDER_ELEMENT = {},
    getParent = DomUtils.getParent;

//CSS 4 Spec (Draft): 3.3.1. Absolutizing a Scope-relative Selector
//http://www.w3.org/TR/selectors4/#absolutizing
function absolutize(token, context){
    //TODO better check if context is document
    var hasContext = !!context && !!context.length && context.every(function(e){
        return e === PLACEHOLDER_ELEMENT || !!getParent(e);
    });


    token.forEach(function(t){
        if(t.length > 0 && isTraversal(t[0]) && t[0].type !== "descendant"){
            //don't return in else branch
        } else if(hasContext && !includesScopePseudo(t)){
            t.unshift(DESCENDANT_TOKEN);
        } else {

pseudo selectors
	
	---
	
	they are available in two forms:
	* filters called when the selector 
	  is compiled and return a function
	  that needs to return next()
	* pseudos get called on execution
	  they need to return a boolean
*/

var DomUtils    = require("domutils"),
    isTag       = DomUtils.isTag,
    getText     = DomUtils.getText,
    getParent   = DomUtils.getParent,
    getChildren = DomUtils.getChildren,
    getSiblings = DomUtils.getSiblings,
    hasAttrib   = DomUtils.hasAttrib,
    getName     = DomUtils.getName,
    getAttribute= DomUtils.getAttributeValue,
    getNCheck   = require("nth-check"),
    checkAttrib = require("./attributes.js").rules.equals,
    BaseFuncs   = require("boolbase"),
    trueFunc    = BaseFuncs.trueFunc,
    falseFunc   = BaseFuncs.falseFunc;

//helper methods
function getFirstElement(elems){
	for(var i = 0; elems && i < elems.length; i++){
		if(isTag(elems[i])) return elems[i];
	}

pseudo selectors

	---

	they are available in two forms:
	* filters called when the selector
	  is compiled and return a function
	  that needs to return next()
	* pseudos get called on execution
	  they need to return a boolean
*/

var DomUtils    = require("domutils"),
    isTag       = DomUtils.isTag,
    getText     = DomUtils.getText,
    getParent   = DomUtils.getParent,
    getChildren = DomUtils.getChildren,
    getSiblings = DomUtils.getSiblings,
    hasAttrib   = DomUtils.hasAttrib,
    getName     = DomUtils.getName,
    getAttribute= DomUtils.getAttributeValue,
    getNCheck   = require("nth-check"),
    checkAttrib = rules.equals,
    BaseFuncs   = require("boolbase"),
    trueFunc    = BaseFuncs.trueFunc,
    falseFunc   = BaseFuncs.falseFunc;

//helper methods
function getFirstElement ( elems ) {
	for ( var i = 0; elems && i < elems.length; i++ ) {
		if ( isTag ( elems[i] ) ) {
			return elems[i];

var DomUtils    = require("domutils"),
    isTag       = DomUtils.isTag,
    getParent   = DomUtils.getParent,
    getChildren = DomUtils.getChildren,
    getSiblings = DomUtils.getSiblings,
    getName     = DomUtils.getName;

/*
	all available rules
*/
module.exports = {
	__proto__: null,

	attribute: require("./attributes.js").compile,
	pseudo: require("./pseudos.js").compile,

	//tags
	tag: function(next, data){
		var name = data.name;

function includesScopePseudo(t){
    return t.type === "pseudo" && (
        t.name === "scope" || (
            Array.isArray(t.data) &&
            t.data.some(function(data){
                return data.some(includesScopePseudo);
            })
        )
    );
}

var DESCENDANT_TOKEN = {type: "descendant"},
    SCOPE_TOKEN = {type: "pseudo", name: "scope"},
    PLACEHOLDER_ELEMENT = {},
    getParent = DomUtils.getParent;

//CSS 4 Spec (Draft): 3.3.1. Absolutizing a Scope-relative Selector
//http://www.w3.org/TR/selectors4/#absolutizing
function absolutize(token, context){
    //TODO better check if context is document
    var hasContext = !!context && !!context.length && context.every(function(e){
        return e === PLACEHOLDER_ELEMENT || !!getParent(e);
    });


    token.forEach(function(t){
        if(t.length > 0 && isTraversal(t[0]) && t[0].type !== "descendant"){
            //don't return in else branch
        } else if(hasContext && !includesScopePseudo(t)){
            t.unshift(DESCENDANT_TOKEN);
        } else {

var DomUtils    = require("domutils"),
    isTag       = DomUtils.isTag,
    getParent   = DomUtils.getParent,
    getChildren = DomUtils.getChildren,
    getSiblings = DomUtils.getSiblings,
    getName     = DomUtils.getName;

/*
	all available rules
*/
module.exports = {
	__proto__: null,

	attribute: require("./attributes.js").compile,
	pseudo: require("./pseudos.js").compile,

	//tags
	tag: function(next, data){
		var name = data.name;