private static Credential getCredentialFromAccessTokenProvider(
      AccessTokenProvider accessTokenProvider, Collection<String> scopes)
      throws IOException, GeneralSecurityException {
    Preconditions.checkArgument(
        accessTokenProvider.getAccessToken() != null, "Access Token cannot be null!");
    GoogleCredential credential =
        GoogleCredentialWithAccessTokenProvider.fromAccessTokenProvider(
            Clock.SYSTEM, accessTokenProvider);
    // TODO: credential.createScoped does nothing at the moment, since
    //  GoogleCredentialWithAccessTokenProvider never sets the serviceAccountPrivateKey.
    //  The AccessTokenProvider interface does not provide a mechanism to return a private key,
    //  and scopes cannot be sent down to the AccessTokenProvider
    //  so they're essentially ignored at the moment.
    return credential.createScoped(scopes);
  }
private static Credential getCredentialFromAccessTokenProvider ( AccessTokenProvider accessTokenProvider , Collection < String > scopes ) throws IOException , GeneralSecurityException { Preconditions . checkArgument ( accessTokenProvider . getAccessToken ( ) != null , "Access Token cannot be null!" ) ; GoogleCredential credential = GoogleCredentialWithAccessTokenProvider . fromAccessTokenProvider ( Clock . SYSTEM , accessTokenProvider ) ; return credential . createScoped ( scopes ) ; }
Creates a {@link Credential} based on information from the access token provider.