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):

    '@' + coin.settings.mdb.host +
    ':' + coin.settings.mdb.port +
    '/' + coin.settings.mdb.database;

console.log('Database: ' + coin.settings.mdb.host + ':' + coin.settings.mdb.port + '/' + coin.settings.mdb.database);

coin.settings.mdb.password = "XX****XX";
coin.settings.mdb = null; // garbage collection

// Connect to Database
function databaseConnect(){
    mdb.connect(dbString, function(err) {
        if (err){

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

Sincerely,
Emma