addOnAuthenticatedCallback method

@override void addOnAuthenticatedCallback(Future<void> callback(String? uid), { int priority = 0, })

Add a callback to be invoked when user authenticates.

The callback receives the user's UID (or null if unavailable).

priority determines execution order:

• Higher values execute first (priority 100 runs before priority 0)
• Same priority callbacks execute in parallel
• Default is 0

Implementation

@override
void addOnAuthenticatedCallback(
  Future<void> Function(String? uid) callback, {
  int priority = 0,
}) {
  _onAuthenticatedByPriority.putIfAbsent(priority, () => []).add(callback);
}