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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 data(self):
 """returns the reference to the data functions as a class"""

        if self._resources is None:
            self.__init()
        if "data" in self._resources:
            url = self._url + "/data"
            return _data.Data(url=url,
                              securityHandler=self._securityHandler,
                              initialize=True,
                              proxy_url=self._proxy_url,
                              proxy_port=self._proxy_port)
        else:
            return None