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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 mediaTypeHelper(mediaType):
 """ Return a function that creates a Responses object; """

    def _innerHelper(data=None):
        """
        Create a Responses object that contains a MediaType entry of the specified mediaType

        Convenience function for the most common cases where you need an instance of Responses
        """
        ret = OpenAPIResponses()
        if data is None:
            data = {}
        ret.default.content[mediaType] = data
        return ret
    return _innerHelper