contains method

@override Future<bool> contains(String key)

Checks for cached data at key.

Throws JsonCacheException to indicate operation failure.

Implementation

@override
Future<bool> contains(String key) async {
  try {
    return await _wrapped.contains(key);
  } on Exception catch (ex, st) {
    Error.throwWithStackTrace(
      JsonCacheException(
        extra: "Error checking for cached data at index '$key'.",
        exception: ex,
      ),
      st,
    );
  }
}