Remove reflect method form public interface

The reflect method is (and should) only every be called internally.
Since if you call it again it would otherwise start mixing and matching
arguments etc.

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

lib/public/AppFramework/Utility/IControllerMethodReflector.php

@@ -40,6 +40,7 @@ interface IControllerMethodReflector {
 	 * @param string $method the method which we want to inspect
 	 * @return void
 	 * @since 8.0.0
+	 * @deprecated 17.0.0 Reflect should not be called multiple times and only be used internally. This will be removed in Nextcloud 18
 	 */
 	public function reflect($object, string $method);