text: define(
      ["zrender/shape/BezierCurve", "zrender/tool/util"],
      function(BezierCurve, util){
          var CustomBezier = function(options){
              options.style = {
                  xStart: options.startPoint.x,
                  yStart: options.startPoint.y,
                  cpX1 : options.anchorPoint.x,
                  cpY1 : options.anchorPoint.y,
                  xEnd: options.endPoint.x,
                  yEnd: options.endPoint.y,
                  strokeColor: 'black',
                  lineWidth: 3,
              }
  
              BezierCurve.call(this, options);
          }
  
          util.inherits(CustomBezier, BezierCurve);
  
          return CustomBezier;
      }
  )