(self)
Start indexing a group of hierarchical documents. The backend should
        ensure that these documents are all added to the same segment::

            with myindex.writer() as w:
                w.start_group()
                w.add_document(kind="class", name="Accumulator")
                w.add_document(kind="method", name="add")
                w.add_document(kind="method", name="get_result")
                w.add_document(kind="method", name="close")
                w.end_group()

                w.start_group()
                w.add_document(kind="class", name="Calculator")
                w.add_document(kind="method", name="add")
                w.add_document(kind="method", name="multiply")
                w.add_document(kind="method", name="get_result")
                w.add_document(kind="method", name="close")
                w.end_group()

        A more convenient way to group documents is to use the
        :meth:`~IndexWriter.group` method and the ``with`` statement.
Start indexing a group of hierarchical documents. The backend should
        ensure that these documents are all added to the same segment::
Start indexing a group of hierarchical documents . The backend should ensure that these documents are all added to the same segment ::
def start_group(self):
        """Start indexing a group of hierarchical documents. The backend should
        ensure that these documents are all added to the same segment::

            with myindex.writer() as w:
                w.start_group()
                w.add_document(kind="class", name="Accumulator")
                w.add_document(kind="method", name="add")
                w.add_document(kind="method", name="get_result")
                w.add_document(kind="method", name="close")
                w.end_group()

                w.start_group()
                w.add_document(kind="class", name="Calculator")
                w.add_document(kind="method", name="add")
                w.add_document(kind="method", name="multiply")
                w.add_document(kind="method", name="get_result")
                w.add_document(kind="method", name="close")
                w.end_group()

        A more convenient way to group documents is to use the
        :meth:`~IndexWriter.group` method and the ``with`` statement.
        """

        pass
def start_group ( self ) : pass