Security-related question about a possible exposed credential

[Emma-NYL]

Hello,

My name is Emma, I am conducting an academic study on possible credential exposure in public GitHub repositories.

While analyzing this repository, I found a string that may represent a credential. I'm including the code snippet below containing possible leakage. To avoid exposing sensitive information publicly, I marked the sensitive information.

Could you please help clarify whether the detected string is:

1. a real credential, or
2. a placeholder / example value?

Thank you for your time.

---

Code snippet (sensitive values masked):

     */
    const SESSION_OAUTH_DATA = 'FlickrSessionOauthData';

    /**
     * Key names for various authentication data items
     */
    const OAUTH_REQUEST_TOKEN = 'oauth_request_token';
    const OAUTH_REQUEST_TOKEN_SECRET = 'oauth_request_token_secret';
    const OAUTH_VERIFIER = 'oauth_verifier';
    const OAUTH_ACCESS_TOKEN = 'oauth_access_token';
    const OAUTH_ACCESS_TOKEN_SECRET = 'oauth_access_token_secret';
    const USER_NSID = 'user_nsid';
    const USER_NAME = 'user_name';

Thank you in advance for your time - I really appreciate it!

Sincerely,
Emma