merge(with:)
Declaration
func merge<P>(with other: P) -> Publishers.Merge5<A, B, C, D, P> where P : Publisher, D.Failure == P.Failure, D.Output == P.Outputfunc merge<P>(with other: P) -> Publishers.Merge5<A, B, C, D, P> where P : Publisher, D.Failure == P.Failure, D.Output == P.Output