def connections(self):
        """
        :return list[Connection]: Connections that this effects is present (with input or output port)
        """
        function = lambda connection: connection.input.effect == self \
                                   or connection.output.effect == self

        return tuple([c for c in self.pedalboard.connections if function(c)])
:return list[Connection]: Connections that this effects is present (with input or output port)