code: func NewChecker(ctx context.Context, client *isolatedclient.Client, maxConcurrent int) *BundlingChecker {
  	return newChecker(ctx, client, maxConcurrent)
  }
docs: // NewChecker creates a new Checker with the given isolated client.
  // maxConcurrent controls maximum number of check requests to be in-flight at once.
  // The provided context is used to make all requests to the isolate server.