code: func NewDrawing(init ...*Drawing) *Drawing {
  	var o *Drawing
  	if len(init) == 1 {
  		o = init[0]
  	} else {
  		o = new(Drawing)
  	}
  	return o.Init()
  }
docs: //
  // NewDrawing - creates an initialized Drawing instance, returns a pointer to it
  //