isBaseOfOrProxy

$boolean = $session->isBaseOfOrProxy( $class1, $class2 )

The isBaseOfOrProxy() function returns TRUE (1) if $class2 is a base class or proxy class of $class1.

 $class1 = "Router";
 $class2 = "ICIM_UnitaryComputerSystem";
 $is_it = $session->isBaseOfOrProxy( $class1, $class2 );