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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 layers(self):
 """gets the globe service layers"""

        if self._layers is None:
            self.__init()
        lyrs = []
        for lyr in self._layers:
            lyr['object'] = GlobeServiceLayer(url=self._url + "/%s" % lyr['id'],
                                              securityHandler=self._securityHandler,
                                              proxy_port=self._proxy_port,
                                              proxy_url=self._proxy_url)
            lyrs.append(lyr)

        return lyrs