code: func (v *Container) GetFocusVAdjustment() *Adjustment {
  	c := C.gtk_container_get_focus_vadjustment(v.native())
  	if c == nil {
  		return nil
  	}
  	obj := glib.Take(unsafe.Pointer(c))
  	return wrapAdjustment(obj)
  }
docs: // GetFocusVAdjustment is a wrapper around
  // gtk_container_get_focus_vadjustment().