P1 - the first parameter type.P2 - the second parameter type.R - the result type.public static interface RequestFunctions.Params2<P1,P2,R> extends F.Function3<Http.Request,P1,P2,R>, RequestFunctions.RequestFunction
Http.Request, two parameters, and return a result type. Results are typically
Result or a CompletionStage that produces a Result.apply