Function: spam-backend-function-type-valid-p
spam-backend-function-type-valid-p is a byte-compiled function defined
in spam.el.gz.
Signature
(spam-backend-function-type-valid-p TYPE)
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/spam.el.gz
(defun spam-backend-function-type-valid-p (type)
(or (eq type 'registration)
(eq type 'unregistration)))