code: function(sx, sy) {
              this.m[0] *= sx;
              this.m[1] *= sx;
              this.m[2] *= sy;
              this.m[3] *= sy;
              return this;
          }
docs: Apply scale
  @method
  @memberof Kinetic.Transform.prototype
  @param {Number} sx
  @param {Number} sy
  @returns {Kinetic.Transform}