/// <summary>
/// Checks if lock holder is locked.
/// </summary>
/// <param name="disposableLock"><see cref="DisposableLock"/> object, can be null.</param>
/// <returns>True if <see cref="disposableLock"/> is not null and <see cref="DisposableLock.Counter"/> is more then 0. Otherwise returns False.</returns>
public static bool IsLocked(this DisposableLock disposableLock)
{
return(DisposableLock.IsLockedInternal(disposableLock));
}
