def __init__(self, name, host='127.0.0.1', port=27017):
        self.name = name
        self.host = host
        self.port = port
def _lastExpect(self):
        constructLine = self.previousExpectLine
        if self._connection is not None and isinstance(self._connection.before, str):
            constructLine += self._connection.before
        if self._connection is not None and isinstance(self._connection.after, str):
            constructLine += self._connection.after
        return  constructLine