    /** * @private */Ext.define('Ext.exporter.file.ooxml.Relationships', {    extend: 'Ext.exporter.file.ooxml.Base',     isRelationships: true,     config: {        relationships: []    },     contentType: {        contentType: 'application/vnd.openxmlformats-package.relationships+xml',        partName: '/_rels/.rels'    },     tpl: [        '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>',        '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">',        '<tpl if="relationships"><tpl for="relationships.getRange()">{[values.render()]}</tpl></tpl>',        '</Relationships>'    ],     destroy: function() {        this.setRelationships(null);        this.callParent();    },     collectFiles: function(files){        if(this.getRelationships().length){            files[this.getPath()] = this.render();        }    },     applyRelationships: function(data, dataCollection){        return this.checkCollection(data, dataCollection, 'Ext.exporter.file.ooxml.Relationship');    },     /**     * Convenience method to add relationships.     * @param {Object/Array} config     * @return {Ext.exporter.file.ooxml.Relationship/Ext.exporter.file.ooxml.Relationship[]}     */    addRelationship: function(config){        return this.getRelationships().add(config || {});    },    removeRelationship: function(config){        return this.getRelationships().remove(config);    } });