Youshido\GraphQL\Execution\Request::getFragments PHP Method

    public function getFragments()
    {
        return $this->fragments;
    }

 private function assetFragmentsUsed(Request $request)
 {
     foreach ($request->getFragmentReferences() as $fragmentReference) {
         $request->getFragment($fragmentReference->getName())->setUsed(true);
     }
     foreach ($request->getFragments() as $fragment) {
         if (!$fragment->isUsed()) {
             throw new InvalidRequestException(sprintf('Fragment "%s" not used', $fragment->getName()), $fragment->getLocation());
         }
     }
 }