firebase add unity to an existing project code example
Example: unity connect to firebase
https://firebase.google.com/docs/unity/setup
FirebaseApp.DefaultInstance.SetEditorDatabaseUrl("https://YOURPROJECTNAME.firebaseio.com/");
DatabaseReference reference = FirebaseDatabase.DefaultInstance.RootReference;
FirebaseDatabase.DefaultInstance.GetReference("DATABASENAME").GetValueAsync().ContinueWith(task => {
if (task.IsFaulted)
{
}
else if (task.IsCompleted)
{
DataSnapshot snapshot = task.Result;
}
});