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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _new_gnu_trans(self, localedir, use_null_fallback=True):
 """ Return a mergeable gettext.GNUTranslations instance. A convenience wrapper. By default gettext uses 'fallback=False'. Using param `use_null_fallback` to avoid confusion with any other references to 'fallback'. """

        use_null_fallback = False
        return gettext_module.translation(
            domain=self.domain,
            localedir=localedir,
            languages=[self.language],
            codeset='utf-8',
            fallback=use_null_fallback)