class_docstr: Module register
class_docstr_tok: ["Module","register"]
docstr: Decorator to register a function or class.
docstr_tok: ["Decorator","to","register","a","function","or","class","."]
code: def register(self, param):
      """Decorator to register a function or class."""
  
      def decorator(key, value):
          self[key] = value
          return value
  
      if callable(param):
          # @reg.register
          return decorator(None, param)
      # @reg.register('alias')
      return lambda x: decorator(param, x)
  
file_path: delta/delta/utils/register.py
imports: import importlib
  import os
  import sys
  from absl import logging
label_desc: Use image node_id 3 for calling the Register obj's underlying member method code with example usage: obj.register(param) and returns: function, value, decorator