Get the checks we must perform for the localized fields.

def _get_localized_field_checks(self):
        """
        Get the checks we must perform for the localized fields.
        """
        localized_fields_checks = []
        for localized_field in self.instance.localized_fields:
            if self.cleaned_data.get(localized_field) is None:
                continue
            f = getattr(self.instance.__class__, localized_field, None)
            if f and f.unique:
                if f.unique:
                    local_name = get_real_fieldname(localized_field, self.language)
                    localized_fields_checks.append((localized_field, local_name))
                    
        return localized_fields_checks