def METHOD_NAME(cls, connection):
    connection.execute(
        cls.tables.some_table.insert(),
        [
            {"id": 1, "data": "d1", "parent_id": None},
            {"id": 2, "data": "d2", "parent_id": 1},
            {"id": 3, "data": "d3", "parent_id": 1},
            {"id": 4, "data": "d4", "parent_id": 3},
            {"id": 5, "data": "d5", "parent_id": 3},
        ],
    )