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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 SensorsMetatagsGet(self, parameters, namespace = None):

 """
 Retrieve sensors with their metatags.
 
 @param namespace (string) - Namespace for which to retrieve the metatags.
 @param parameters (dictionary - Dictionary containing further parameters.
 
 @return (bool) - Boolean indicating whether SensorsMetatagsget was successful
 """

        ns = "default" if namespace is None else namespace
        parameters['namespace'] = ns
        if self.__SenseApiCall__('/sensors/metatags.json', 'GET', parameters = parameters):
            return True
        else:
            self.__error__ = "api call unsuccessful"
            return False