The function setup-lisp-proxy defines a Lisp proxy, as described for define-lisp-proxy.
Unlike define-lisp-proxy name can be nil, in which case setup-lisp-proxy generates a symbol by cl:gensym, uses it as the name and returns it.
interface-and-method-descs describes the Java interfaces to implement and the Lisp functions to call. setup-lisp-proxy takes it as a single argument, which must be a list, but otherwise parses it just like define-lisp-proxy.
LispWorks User Guide and Reference Manual - 20 Sep 2017