GraphQL\Validator\Messages::inlineFragmentOnNonCompositeErrorMessage PHP Метод

    static function inlineFragmentOnNonCompositeErrorMessage($typeName)
    {
        return "Fragment cannot condition on non composite type \"{$typeName}\".";
    }

 public function testScalarIsInvalidInlineFragmentType()
 {
     $this->expectFailsRule(new FragmentsOnCompositeTypes(), '
   fragment invalidFragment on Pet {
     ... on String {
       barks
     }
   }
     ', [new FormattedError(Messages::inlineFragmentOnNonCompositeErrorMessage('String'), [new SourceLocation(3, 16)])]);
 }