admin:appserver-set-output-omit-xml-declaration( $config as element(configuration), $appserver-id as xs:unsignedLong, $value as xs:string ) as element(configuration)
This function configures whether serialized output for the specified App Server should omit the inclusion of an XML declaration by default.
http://marklogic.com/xdmp/privileges/admin/app-server
http://marklogic.com/xdmp/privileges/admin/app-server/{id}
http://marklogic.com/xdmp/privileges/admin/group
http://marklogic.com/xdmp/privileges/admin/group/{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-output-omit-xml-declaration($config, admin:appserver-get-id($config, $groupid, "myAppServer"), "yes") (: 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. :)