P1 - the first parameter type.P2 - the second parameter type.P3 - the third parameter type.R - the result type.public static interface RequestFunctions.Params3<P1,P2,P3,R> extends F.Function4<Http.Request,P1,P2,P3,R>, RequestFunctions.RequestFunction
Http.Request, three parameters, and return a result type.
Results are typically Result or a CompletionStage
that produces a Result.apply