open method
Implementation
Future<void> open() async {
assert(tape.isInitialized);
if (_mockedBackends.containsKey(name)) {
_backend = _mockedBackends[name]!.cast<T>(name);
} else if (_openedBackends.containsKey(name)) {
_backend = _openedBackends[name]!.cast<T>(name);
} else {
_backend = await Backend.open(name, ifNew);
}
_openedBackends[name] = _backend!;
}