/// <summary>
        /// Writes to destination.
        /// </summary>
        public void WriteToDestination()
        {
            try
            {
                if (_alreadyWritten)
                {
                    throw ExceptionFactory.CreateOperationForbiddenException("Already written");
                }

                ExtractToDestination();
            }
            catch (Exception ex)
            {
                throw ex.Handle();
            }
            finally
            {
                _alreadyWritten = true;

                foreach (var one in _data)
                {
                    one.Value.SafeDispose();
                }
            }
        }