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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 metadataContributer(self):
 """gets the metadata featurelayer object"""

        if self._metaFL is None:
            fl = FeatureService(url=self._metadataURL,
                              proxy_url=self._proxy_url,
                              proxy_port=self._proxy_port)
            self._metaFS = fl
        return self._metaFS