
admin:appserver-set-authentication( $config as element(configuration), $appserver-id as xs:unsignedLong, $value as xs:string ) as element(configuration)
This function sets the authentication scheme in the configuration for the specified App Server.
http://marklogic.com/xdmp/privileges/admin/app-server-security
http://marklogic.com/xdmp/privileges/admin/app-server-security/{id}
http://marklogic.com/xdmp/privileges/admin/group-security
http://marklogic.com/xdmp/privileges/admin/group-security/{id}
  xquery version "1.0-ml";
  import module namespace admin = "http://marklogic.com/xdmp/admin"
		  at "/MarkLogic/admin.xqy";
  let $config := admin:get-configuration()
  let $groupid := admin:group-get-id($config, "Default")
  return
  admin:appserver-set-authentication($config,
         admin:appserver-get-id($config, $groupid, "myAppServer"),
         "digest")
  (: returns the new configuration element -- use admin:save-configuration
     to save the changes to the configuration or pass the configuration
     to other Admin API functions to make other changes.  :)