code: def _make_key(self, i, j):
      return f"{i},{j}"
  
file_path: H2O/h2o_flexgen/benchmark/third_party/DeepSpeed/deepspeed/checkpoint/reshape_meg_2d.py
imports: from .reshape_utils import partition_data
label_desc: Use image node_id 7 for calling the meg_2d_parallel_map obj's underlying member method code with example usage: obj._make_key(i, j) and returns: i, str, j