code: func (v *EntryBuffer) SetText(text string) {
  	cstr := C.CString(text)
  	defer C.free(unsafe.Pointer(cstr))
  	C.gtk_entry_buffer_set_text(v.native(), (*C.gchar)(cstr),
  		C.gint(len(text)))
  }
docs: // SetText() is a wrapper around gtk_entry_buffer_set_text().