code: def _load_class(cls, d):
    
    for k, v in d.items():
      if isinstance(k, tuple):
        typ, k = k
        if typ == 'property':
          v = property(*v)
        elif typ == 'staticmethod':
          v = staticmethod(v) # pylint: disable=redefined-variable-type
        elif typ == 'classmethod':
          v = classmethod(v)
      setattr(cls, k, v)
    return cls
docs: Loads additional properties into class `cls`.