Decorator for functions and classes that implement unstable standards which haven’t been approved yet. The decorator can be used to tag individual functions or methods.

Please refer to the user documentation for details.

args: iterable of arguments.

Currently, the decorator must always be called with one and only one argument, a string representing the feature’s name associated with the decorated class or functions. Additional arguments will be ignored, while using the decorator without any arguments will result in a PrototypeError error.

The class or function it decorates, which will be associated to the
feature provided as argument.