draw(cfg, container) {
        if (this.drawShape) {
          this.drawShape(cfg, container);
        }
      }
/**
       * draw the shape
       * @param {Object} cfg options
       * @param {Object} container container to store the shapes
       */
draw the shape
@param {Object} cfg options
@param {Object} container container to store the shapes
draw the shape @param { Object } cfg options @param { Object } container container to store the shapes
draw(cfg, container) {
        if (this.drawShape) {
          this.drawShape(cfg, container);
        }
      }
draw ( cfg , container ) { if ( this . drawShape ) { this . drawShape ( cfg , container ) ; } }
draw the shape
 @param {Object} cfg options
 @param {Object} container container to store the shapes
draw the shape @param { Object } cfg options @param { Object } container container to store the shapes