code: def add_multi_constructor(tag_prefix, multi_constructor, Loader=None):
      """
      Add a multi-constructor for the given tag prefix.
      Multi-constructor is called for a node if its tag starts with tag_prefix.
      Multi-constructor accepts a Loader instance, a tag suffix,
      and a node object and produces the corresponding Python object.
      """
      if Loader is None:
          loader.Loader.add_multi_constructor(
              tag_prefix, multi_constructor
          )
          loader.FullLoader.add_multi_constructor(
              tag_prefix, multi_constructor
          )
          loader.UnsafeLoader.add_multi_constructor(
              tag_prefix, multi_constructor
          )
      else:
          Loader.add_multi_constructor(tag_prefix, multi_constructor)
  
imports: from error import *
  from tokens import *
  from events import *
  from nodes import *
  from loader import *
  from dumper import *
label_desc: Use image node_id 25 for calling a global function with example usage: add_multi_constructor(tag_prefix, multi_constructor, Loader) without return types