code: private void initExtendedTypes()
    {    
      m_extendedTypes = new ExtendedType[m_initialSize];
      for (int i = 0; i < DTM.NTYPES; i++) {
          m_extendedTypes[i] = m_defaultExtendedTypes[i];
          m_table[i] = new HashEntry(m_defaultExtendedTypes[i], i, i, null);
      }
      
      m_nextType = DTM.NTYPES;
    }
docs: Initialize the vector of extended types with the
  basic DOM node types.