enum OdDgSchemaItemVariantType { kUnknownVar = 0, kStringVar = 1, kDoubleVar = 2, kInt32Var = 3, kBoolVar = 4, kPoint3dVar = 5, kDateTimeVar = 6, kItemGroupVar = 7, kExpressionGroupVar = 8, kStringArrayVar = 9, kDoubleArrayVar = 10, kInt32ArrayVar = 11, kBoolArrayVar = 12, kPoint3dArrayVar = 13, kDateTimeArrayVar = 14, kEmptyVar = 15 };