code: func (v *Clipboard) WaitIsTargetAvailable(target gdk.Atom) bool {
  	c := C.gtk_clipboard_wait_is_target_available(v.native(), C.GdkAtom(unsafe.Pointer(target)))
  	return gobool(c)
  }
docs: // WaitIsTargetAvailable is a wrapper around gtk_clipboard_wait_is_target_available