Update subclassed method signature
Update subclassed method signature

Guzzle\Service\Command\OperationResponseParser had the method signature
changed in Guzzle v3.6. It seems like a change that doesn't affect
desk-php, just needs to update the method signature in anything that
subclasses it.

bradfeehan/desk-php,bradfeehan/desk-php,4ernovm/desk-php,4ernovm/desk-php,quizlet/desk-php,quizlet/desk-php