private void _read()
 {
     _aCc = new SubtypeA.SubtypeCc(m_io, this, m_root);
     _aCD = new SubtypeA.SubtypeC.SubtypeD(m_io, this, m_root);
     _b   = new SubtypeB(m_io, this, m_root);
 }
 private void _read()
 {
     _valueB = m_io.ReadS1();
     _aCc    = new SubtypeA.SubtypeCc(m_io, this, m_root);
     _aCD    = new SubtypeA.SubtypeC.SubtypeD(m_io, this, m_root);
 }