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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 get_protocols(self, protocol):
 """Returns a list of protocols that matches to the specified protocol. """

        if isinstance(protocol, packet_base.PacketBase):
            protocol = protocol.__class__
        assert issubclass(protocol, packet_base.PacketBase)
        return [p for p in self.protocols if isinstance(p, protocol)]