code: func FlowBoxChildNew() (*FlowBoxChild, error) {
  	c := C.gtk_flow_box_child_new()
  	if c == nil {
  		return nil, nilPtrErr
  	}
  	return wrapFlowBoxChild(glib.Take(unsafe.Pointer(c))), nil
  }
docs: // FlowBoxChildNew is a wrapper around gtk_flow_box_child_new()