docs: def reset(cls):
          """Reset the registry to the standard multihash functions."""
          # Maps function names (hyphens or underscores) to registered functions.
          cls._func_from_name = {}
  
          # Maps hashlib names to registered functions.
          cls._func_from_hash = {}
  
          # Hashlib compatibility data by function.
          cls._func_hash = {}
  
          register = cls._do_register
          for (func, hash_name, hash_new) in cls._std_func_data:
              register(func, func.name, hash_name, hash_new)
          assert set(cls._func_hash) == set(Func)