Calling file processor

FileIOTest.cs

var pool = ArrayPool<Employee>.Shared;
            var employeeRecords = pool.Rent(100000);
            var pipeLinesTest = new WithPipeLines();

            try
            {
                await pipeLinesTest.ProcessFileAsync(_filePath, employeeRecords);
            }
            finally
            {
                pool.Return(employeeRecords, clearArray: true);
            }