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A partial method does not have any code, so it is not an error that none of its parameters are used.
It should not be considered an error even in the partial class that implements the code. Partial methods are generated and some instance may use all of the parameters and some may not. At any event, you can't change the signature of a partial method.
It should not be considered an error even in the partial class that implements the code. Partial methods are generated and some instance may use all of the parameters and some may not. At any event, you can't change the signature of a partial method.