def connect(self): 
        try:
            self.connection = pymongo.Connection(self.host, self.port)
            self.db = self.connection[self.name]
        except AutoReconnect:
            raise DatabaseException("It's not possible connect to the database")
def get_long_running_output(pipeline_response):
            deserialized = self._deserialize('CalculateExchangeOperationResultResponse', pipeline_response)

            if cls:
                return cls(pipeline_response, deserialized, {})
            return deserialized