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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 sink(self, name, filter_=None, destination=None):
 """Creates a sink bound to the current client. :type name: str :param name: the name of the sink to be constructed. :type filter_: str :param filter_: (optional) the advanced logs filter expression defining the entries exported by the sink. If not passed, the instance should already exist, to be refreshed via :meth:`Sink.reload`. :type destination: str :param destination: destination URI for the entries exported by the sink. If not passed, the instance should already exist, to be refreshed via :meth:`Sink.reload`. :rtype: :class:`google.cloud.logging.sink.Sink` :returns: Sink created with the current client. """

        return Sink(name, filter_, destination, client=self)