text: /**
   * @class Ext.chart.interactions.Rotate
   * @extend Ext.chart.interactions.Abstract
   * @alias interaction.rotate
   *
   * The Rotate interaction allows the user to rotate a polar chart about its central point.
   */
  
  /**
   * @event rotate
   * Fires on every tick of the rotation
   * @param {Ext.chart.interactions.Rotate} this This interaction.
   * @param {Number} angle The new current rotation angle.
   */
  
  /**
   * @event rotationEnd
   * Fires after a user finishes the rotation
   * @param {Ext.chart.interactions.Rotate} this This interaction.
   * @param {Number} angle The new current rotation angle.
   */
  