def METHOD_NAME(self):
    """
    Testing copy of RtTrace object.
    """
    rtr = RtTrace()
    rtr.copy()
    # register predefined function
    rtr.register_rt_process('integrate', test=1, muh='maeh')
    rtr.copy()
    # register ObsPy function call
    rtr.register_rt_process(obspy.signal.filter.bandpass, freqmin=0,
                            freqmax=1, df=0.1)
    rtr.copy()
    # register NumPy function call
    rtr.register_rt_process(np.square)
    rtr.copy()