def METHOD_NAME(self):
    """
    The spikes returned by the most recent thresholding operation.
    """
    # Note that we have to directly access the ArrayVariable object here
    # instead of using the Group mechanism by accessing self._spikespace
    # Using the latter would cut _spikespace to the length of the group
    spikespace = self.variables["_spikespace"].get_value()
    return spikespace[: spikespace[-1]]