isClosed method

Returns whether this application context has been closed.

A closed context has completed its lifecycle and released all resources. Attempting to use a closed context will typically result in exceptions.

Closed Context Behavior:

• Pod Access: IllegalStateException when retrieving pods
• Event Publishing: Events may be ignored or cause exceptions
• Configuration Access: Environment and configuration may be unavailable
• Resource State: Database connections, thread pools, etc. are closed

Lifecycle:

final context = MyApplicationContext();
print(context.isClosed()); // false

await context.refresh();
print(context.isClosed()); // false

await context.close();
print(context.isClosed()); // true