code: def get_decoder_relative_position_embedding_group():
      """Get the decoder relative position embedding group the caller rank belongs to."""
      assert (
          _DECODER_RELATIVE_POSITION_EMBEDDING_GROUP is not None
      ), "decoder relative position embedding group is not initialized"
      return _DECODER_RELATIVE_POSITION_EMBEDDING_GROUP
  
imports: from typing import Tuple, Optional
  import warnings
  import os
  import torch
  from apex.transformer.log_util import get_transformer_logger
  from apex.transformer._ucc_util import HAS_UCC
label_desc: Use image node_id 19 for calling a global function with example usage: get_decoder_relative_position_embedding_group() and returns: _DECODER_RELATIVE_POSITION_EMBEDDING_GROUP