code: def use_einsum_optimization():
      """Whether to use einsum for attention. This will potentially accelerate the
      attention cell
  
      Returns
      -------
      flag
          The use einsum flag
  
      """
      flag = os.environ.get("GLUONNLP_USE_EINSUM", False)
      return flag
  
file_path: gluon-nlp/src/gluonnlp/base.py
imports: import os
  import numpy
label_desc: Use image node_id 7 for calling a global function with example usage: use_einsum_optimization() and returns: flag