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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 generate_trajs(self, M, N, start=None, stop=None, dt=1):
 """ Generates M random trajectories of length N each with time step dt """

        from msmtools.generation import generate_trajs
        return generate_trajs(self._P, M, N, start=start, stop=stop, dt=dt)