xdmp.getSessionFieldNames() as Sequence
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.setSessionField
function to set a named value in a session and the
xdmp.getSessionField
function to return a value set in a session field.
xdmp.getSessionFieldNames(); => ["user", "role", "action", "index"]