Renci.SshNet.Sftp.SftpFileStream.CheckSessionIsOpen C# (CSharp) Method

        private void CheckSessionIsOpen()
        {
            if (_session == null)
                throw new ObjectDisposedException(GetType().FullName);
            if (!_session.IsOpen)
                throw new ObjectDisposedException(GetType().FullName, "Cannot access a closed SFTP session.");
        }
    }