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So does Python. They're called protocols. [0] [0]: https://typing.python.org/en/latest/spec/protocol.html https://typing.python.org/en/latest/spec/protocol.htm

So does Python. They're called protocols. [0] [0]: https://typing.python.org/en/latest/spec/protocol.html https://typing.python.org/en/latest/spec/protocol.html