'resource' is a soft reserved keyword as of PHP version 7.0 and should not be used to name a class, interface or trait or as part of a namespace

Hi, just as the title says:
When you define a rest resource, you have to use the Drupal\module_name\Plugin\rest\resource namespace, however, "resource" is a soft reserved keyword in PHP7.
See: http://php.net/manual/en/reserved.other-reserved-words.php