gtk:builder-translation-domain (object)

object -- a gtk:builder object
domain -- a string for the translation domain or nil

The accessor for the translation-domain slot of the gtk:builder class gets or sets the translation domain of the builder.

The translation domain used when translating property values that have been marked as translatable in interface descriptions. If the translation domain is nil, the gtk:builder object uses the gettext() function, otherwise the d_dgettext() function.