docs: def decorate_all_methods(decorator):
    """
    Build and return a decorator that will decorate all class members.
  
    This will apply the passed decorator to all of the methods in the decorated
    class, except the __init__ method, when a class is decorated with it.
    """
    def decorate_class(cls):
      for name, m in inspect.getmembers(cls, inspect.ismethod):
        if name != "__init__":
          setattr(cls, name, decorator(m))
      return cls
    return decorate_class