throttling async tasks using semaphore in c#

CSharpThrottle.cs

public async Task SaveEmployees(ICollection<EmployeeImportDto> employees)
        {
            // set maximum 8 concurrent tasks 
            var throttler = new SemaphoreSlim(initialCount: 8);
            var tasks = employees.Select(async item =>
            {
                await throttler.WaitAsync();
                try
                {
                    await SaveEmployee(item).ConfigureAwait(false);
                }
                finally
                {
                    throttler.Release();
                }
            });
            await Task.WhenAll(tasks);
        }