code: def merge_translation(self, context):
          
          language = get_language()
          i18n_service = context.get('_i18n_service', None)
          if i18n_service:
              # Cache the original translation object to reduce overhead
              if language not in self._translations:
                  self._translations[language] = trans_real.DjangoTranslation(language)
  
              translation = trans_real.translation(language)
              translation.merge(i18n_service)
  
          yield
  
          # Revert to original translation object
          if language in self._translations:
              trans_real._translations[language] = self._translations[language]
              # Re-activate the current language to reset translation caches
              trans_real.activate(language)
docs: Context wrapper which modifies the given language's translation catalog using the i18n service, if found.