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serialization - Call json.Unmarshal inside UnmarshalJSON function without causing stack overflow

I wanted to perform some additional steps for initializing a data structure inside my implementation UnmarshalJSON. Calling json.Unmarshal(b, type) inside that implementation, naturally, causes a stack overflow.

The JSON decoder is continiously trying to look up, if there is a custom UnmarshalJSON implementation which then again, calls json.Unmarshal.

Is there another way to do this? Just call the underlying default implementation without causing this?

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