code: def get_relationship_column_id(path):
      _, r = path[0]
      child_link_name = r._child_column_name
      for _, r in path[1:]:
          parent_link_name = child_link_name
          child_link_name = "%s.%s" % (r.parent_name, parent_link_name)
      return child_link_name
  
file_path: featuretools/featuretools/utils/gen_utils.py
imports: import importlib
  import logging
  import re
  import sys
  from enum import Enum
  from tqdm import tqdm
label_desc: Use image node_id 2 for calling a global function with example usage: get_relationship_column_id(path) and returns: child_link_name