Function match-url-dispatch Matches the request url against urlmap, then apply the dispatch function.
Generic Function apply-url-method Applies args (converted to lisp data by `^wisp-arg') found in the url to the method function.
Generic Function ^wisp-arg Used by url dispatcher to convert url string to lisp data.
Method (^wisp-arg t t) Default converstion from url-string to lisp data is the url-string itself.