*feeling-lucky-url*

;; If `clojure.java.javadoc/*feeling-lucky*` is true,
;; clojure.java.javadoc/javadoc opens a browser with this URL if it can’t
;; find the proper documentation URL (e.g. if it’s a custom class).

;; Default value
*feeling-lucky-url*
; => "http://www.google.com/search?btnI=I%27m%20Feeling%20Lucky&q=allinurl:"

;; Use DuckDuckGo instead of Google
(binding [clojure.java.javadoc/*feeling-lucky-url* "https://duckduckgo.com/?q=\\"]
  (clojure.java.javadoc/javadoc your-class))