def to_pb(self):
        """Converts the row filter to a protobuf.

        :rtype: :class:`.data_v2_pb2.RowFilter`
        :returns: The converted current object.
        """
        condition_kwargs = {"predicate_filter": self.base_filter.to_pb()}
        if self.true_filter is not None:
            condition_kwargs["true_filter"] = self.true_filter.to_pb()
        if self.false_filter is not None:
            condition_kwargs["false_filter"] = self.false_filter.to_pb()
        condition = data_v2_pb2.RowFilter.Condition(**condition_kwargs)
        return data_v2_pb2.RowFilter(condition=condition)
Converts the row filter to a protobuf.

        :rtype: :class:`.data_v2_pb2.RowFilter`
        :returns: The converted current object.