/**
 * @class Ext.d3.hierarchy.partition.Sunburst
 * @extend Ext.d3.hierarchy.partition.Partition
 * @xtype d3-sunburst
 * The 'd3-sunburst' component visualizes tree nodes as donut sectors,
 * with the root circle in the center. The angle and area of each sector corresponds
 * to its {@link Ext.d3.hierarchy.Hierarchy#nodeValue value}. By default
 * the same value is returned for each node, meaning that siblings will span equal
 * angles and occupy equal area.
 *
 *     @example packages=[d3,ext-react]
 *     import React, { Component } from 'react'
 *     import { ExtReact, Container }  from '@sencha/ext-react';
 *     import { D3_Sunburst } from '@sencha/ext-react-d3';
 *
 *     export default class MyExample extends Component {
 *
 *         store = Ext.create('Ext.data.TreeStore', {
 *             data: [{
 *                 text: "Oscorp",
 *                 children: [{
 *                     text: 'Norman Osborn'
 *                     },
 *                     {
 *                         text: 'Harry Osborn'
 *                     },
 *                     {
 *                         text: 'Arthur Stacy'
 *                     }
 *                 ]
 *                 },{
 *                 text: "SHIELD",
 *                 children: [{
 *                     text: 'Nick Fury'
 *                     },{
 *                         text: 'Maria Hill'
 *                     },{
 *                         text: 'Tony Stark'
 *                     }
 *                 ]
 *                 },{
 *                 text: "Illuminati",
 *                 children: [{
 *                         text: 'Namor'
 *                     },{
 *                         text: 'Tony Stark'
 *                     },{
 *                         text: 'Reed Richards'
 *                     },{
 *                         text: 'Black Bolt'
 *                     },{
 *                         text: 'Stephen Strange'
 *                     },{
 *                         text: 'Charles Xavier'
 *                     }
 *                 ]
 *             }
 *             ]
 *         });
 *
 *         render() {
 *             return (
 *                 <ExtReact>
 *                     <Container layout="fit">
 *                         <D3_Sunburst store={this.store} />
 *                     </Container>
 *                 </ExtReact>
 *             )
 *         }
 *     }
 *
 *
 */
 
/**
 * @cfg {Array} [textPadding=[5, '0.35em']]
 * The padding of a node's text inside its container.
 *
 * @accessor
 */
 
/**
 * @cfg {Number} [zoomParentDotRadius=30]
 * The radius of the dot in the center of the sunburst that represents the parent node
 * of the currently visible node hierarchy and allows to zoom one level up by clicking
 * or tapping it.
 *
 * @accessor
 */