private _Semaphore _Lock4()
        {
            var semaphore = new _Semaphore(semaphoreSlim);

            semaphore.Lock(cancellationToken);
            return(semaphore);
        }
        private _Semaphore _Lock2()
        {
            var semaphore = new _Semaphore(semaphoreSlim);

            semaphore.Lock(millisecondsTimeout);
            return(semaphore);
        }
        private _Semaphore _Lock3()
        {
            var semaphore = new _Semaphore(semaphoreSlim);

            semaphore.Lock(timeout);
            return(semaphore);
        }
        private _Semaphore _Lock1()
        {
            var semaphore = new _Semaphore(semaphoreSlim);

            semaphore.Lock();
            return(semaphore);
        }
        private async Task <_Semaphore> _Lock6Async()
        {
            var semaphore = new _Semaphore(semaphoreSlim);
            await semaphore.LockAsync(timeout, cancellationToken);

            return(semaphore);
        }
        private async Task <_Semaphore> _Lock3Async()
        {
            var semaphore = new _Semaphore(semaphoreSlim);
            await semaphore.LockAsync(timeout);

            return(semaphore);
        }
        private async Task <_Semaphore> _Lock2Async()
        {
            var semaphore = new _Semaphore(semaphoreSlim);
            await semaphore.LockAsync(millisecondsTimeout);

            return(semaphore);
        }
        private _Semaphore _Lock5()
        {
            var semaphore = new _Semaphore(semaphoreSlim);

            semaphore.Lock(millisecondsTimeout, cancellationToken);
            return(semaphore);
        }