2.7 Filtering Requests by Method
The web-server/dispatchers/dispatch-method module defines a dispatcher constructor
that calls an underlying dispatcher
provided the request method belongs to a given list.
procedure
(make method inner) → dispatcher/c
method : (or/c symbol? (listof symbol?)) inner : dispatcher/c
Calls inner if the method of the request, converted to
a string, case-insensitively matches method (if method is a symbol, or, if a list, one of the elements of method). Otherwise, calls next-dispatcher.