code: function(theta, method, opt) {
      var that = this;
      var options = $.merge(this.config, opt || {}, {
        modes: [ 'polar' ]
      });
      var prop = opt.property || (method === "animate" ? 'end' : 'current');
      if(method === 'animate') {
        this.fx.animation.pause();
      }
      this.graph.eachNode(function(n) {
        var p = n.getPos(prop);
        p.theta += theta;
        if (p.theta < 0) {
          p.theta += Math.PI * 2;
        }
      });
      if (method == 'animate') {
        this.fx.animate(options);
      } else if (method == 'replot') {
        this.fx.plot();
        this.busy = false;
      }
    }
docs: /*
  Method: rotateAngle
  
  Rotates the graph of an angle theta.
  
  Parameters:
  
  node - (object) A <Graph.Node>.
  method - (string) Whether to perform an animation or just replot the graph. Possible values are "replot" or "animate".
  opt - (object) Configuration options merged with this visualization configuration options.
  
  See also:
  
  <Sunburst.rotate>