code: def generate_feature_name_if_not_string(s):
      if isinstance(s, str):
          return s
  
      return f"feature_{s}"
  
file_path: mlflow/mlflow/utils/string_utils.py
imports: import os
  import re
  import shlex
  from typing import List
label_desc: Use image node_id 4 for calling a global function with example usage: generate_feature_name_if_not_string(s) and returns: str, s, s