class_docstr: A small serializable object to wrap literal values without copying.
code: def __call__(self):
      return self.data
  
imports: from collections import defaultdict
  from typing import List, Sequence
  from flash.core.utilities.imports import _TOPIC_SERVE_AVAILABLE
label_desc: Use image node_id 4 for calling the literal obj's underlying member method code with example usage: obj.__call__() and returns: self