rem: struct FieldDataTraits<NodePtr> : public FieldTraitsRecurseMapper<NodePtr>
add: struct FieldDataTraits<NodePtr> : public FieldTraitsRecurseMapper<NodePtr, true>
context: OSG_BEGIN_NAMESPACE/*! \file OSGNodeFieldDataType.h    \ingroup FieldLib    \ingroup SingleFields    \ingroup MultiFields    \brief OpenSG Node Field Data Types  *//*! \brief NodePtr field traits    \ingroup FieldLib    \ingroup SingleFields    \ingroup MultiFields */template <>struct FieldDataTraits<NodePtr> : public FieldTraitsRecurseMapper<NodePtr>{    static DataType                  _type;    enum                            { StringConvertable = 0x00 };    enum                            { bHasParent        = 0x01 };    static DataType &getType (void) { return _type;            }    static char     *getSName(void) { return "SFNodePtr";      }    static char     *getMName(void) { return "MFNodePtr";      }};