Opc.Ua.NodeBrowser.Next C# (CSharp) Method

        public virtual IReference Next()
        {
            lock (DataLock)
            {
                IReference reference = null;

                // always return the previous pushed reference first.
                if (m_pushBack != null)
                {
                    reference = m_pushBack;
                    m_pushBack = null;
                    return reference;
                }

                if (m_index < m_references.Count)
                {
                    return m_references[m_index++];
                }

                return null;
            }
        }