public async Task SaveAsync(Library library)
{
await inner.SaveAsync(library);
TrySaveDefaultFilePath(library);
changeTracker.Clear();
}
/// <summary>
/// Removes all items from the <see cref="T:System.Collections.Generic.ICollection`1" />.
/// </summary>
/// <exception cref="T:System.NotSupportedException">
/// The <see cref="T:System.Collections.Generic.ICollection`1" /> is read-only.
/// </exception>
public void Clear( )
{
Precheck( );
_tracker.Clear( );
}