Google API Tracing Token - PHP

tracing_token_sample.php

$service = new Google_Service_Directory($googleClient);

// A tracing token can be utilizing with the PHP 1.0 library by passing an associative array to
// the '$optParams' value of the method call.  The order of this parameter varies for each method call, 
// but is typically immediately after the required arguments.
//
// The tracing token parameter will need to be added to EACH AND EVERY call where a tracing token is required.
$makeAdmin = new Google_Service_Directory_UserMakeAdmin();
$makeAdmin->setStatus(true);
$service->users->makeAdmin('marty.mcfly@timecircuit.org', $makeAdmin, array(
  'trace' => 'token:<<token goes here>>'
));