xdmp:get-session-field-names() as xs:string*
Returns a sequence of the HTTP session field names from the session
created by the xdmp:login
function.
http://marklogic.com/xdmp/privileges/xdmp-get-session-field-names
xdmp:set-session-field
function to set a named value in a session and the
xdmp:get-session-field
function to return a value set in a session field.
xdmp:get-session-field-names() => ("user", "role", "action", "index")