code: private static function tryResolveByWebTokenJwtSystem(): ?WebTokenJwtSignatureGenerator
      {
          $requiredClasses = [
              WebTokenComponentJws::class,
              WebTokenComponentJwk::class,
              WebTokenComponentJWKFactory::class,
          ];
  
          foreach ($requiredClasses as $requiredClass) {
              if (!class_exists($requiredClass)) {
                  return null;
              }
          }
  
          return new WebTokenJwtSignatureGenerator();
      }
docs: Try the resolve WebTokenJwtSignatureGenerator
  
  @return WebTokenJwtSignatureGenerator|null