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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 _validated_config_filename(self, name):
 """Make config dir and return full file path and extension Args: name (str):
 Filename without dir or extension Returns: str: Full path including extension """

        dir_name = self._make_config_dir()
        filename = os.path.join(dir_name, name.split(".json")[0] + ".json")
        return filename