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):

 */
public class KeyGenerator {

    private static final String SIGNING_KEYS = "sig_keys";
    private static final String ENCRYPTION_KEYS = "enc_keys";
    private static final String KEY_STORE_FILE = "keystore";
    private static final String KEY_STORE_PASSWORD = "keypasswd";
    private static final String DN_NAME = "dnname";
    private static final String OXELEVEN_ACCESS_TOKEN = "at";
    private static final String OXELEVEN_GENERATE_KEY_ENDPOINT = "ox11";
    private static final String EXPIRATION = "expiration";
    private static final String EXPIRATION_HOURS = "expiration_hours";
    private static final String KEY_LENGTH = "key_length";

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

Sincerely,
Emma