isMemberByKeyf

$boolean = $session->isMemberByKeyf( $object, $table,
    [$keytype, $keyvalue], $freshness)

The isMemberByKeyf() function is similar to isMemberByKey(), but with reference to the freshness of the value. The section “$freshness” on page 73 provides additional information.

 $exists = $session->isMemeberByKeyf(
   "GA_CompoundDriver::Bridge-Generic-Driver",
   "drivers", [ "INT", 10 ], 120 )