class_docstr: Works like a dictionary that automatically assign values for new keys.
code: def __getitem__(self, record_id):
      return self.get_name(record_id)
  
file_path: icevision/icevision/core/id_map.py
imports: from icevision.imports import *
label_desc: Use image node_id 7 for calling the IDMap obj's underlying member method code with example usage: obj.__getitem__(record_id) and returns: self