code: def t5x_relpos_bias_lookup(params, i, prefix):
      """Returns the Relative Position Bias parameters of a layer. Does not transpose."""
      return params[f"{prefix}/{prefix}/relpos_bias/rel_embedding"][
          :, i, :
      ]
  
file_path: transformers/src/transformers/models/umt5/convert_umt5_checkpoint_to_pytorch.py
imports: import argparse
  import collections
  import numpy
  import torch
  from flax import traverse_util
  from t5x import checkpoints
  from transformers import MT5Config, UMT5EncoderModel, UMT5ForConditionalGeneration
  from transformers.utils import logging
label_desc: Use image node_id 1 for calling a global function with example usage: t5x_relpos_bias_lookup(params, i, prefix) and returns: params