I am trying to access the JsnUser object from the chronoconnectivity component (from where it allows to write PHP code)

<?php
$user=new JsnUser();
?>

I am getting error

Fatal error: Class 'JsnUser' not found in /components/com_chronoconnectivity/libraries/chronoconnection.php(1347) : eval()'d code on line 2

The code at that line is eval('?>'.$this->connection_details->where_sql);

Looks like it is trying to do 'eval' on JsnUser object, is it supposed to work ? It works with $user=JFactory::getUser();