initialize method

@override FutureOr<InitializationResult> initialize()

Initialization implementation. Do not call it directly, use doInitialization.

It can be a synchronous (returning a bool) or an asynchronous implementation (returning a Future<bool>).

See initializeDependencies.

Implementation

@override
FutureOr<InitializationResult> initialize() =>
    databaseAdapter.ensureInitialized(parent: this);