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