code: func (fb *FlowBox) SetHAdjustment(adjustment *Adjustment) {
  	C.gtk_flow_box_set_hadjustment(fb.native(), adjustment.native())
  }
docs: // TODO 3.22.6 gtk_flow_box_get_child_at_pos()
  // SetHAdjustment is a wrapper around gtk_flow_box_set_hadjustment()