enum IfcStairTypeEnum { kIfcStairTypeEnum_STRAIGHT_RUN_STAIR, kIfcStairTypeEnum_TWO_STRAIGHT_RUN_STAIR, kIfcStairTypeEnum_QUARTER_WINDING_STAIR, kIfcStairTypeEnum_QUARTER_TURN_STAIR, kIfcStairTypeEnum_HALF_WINDING_STAIR, kIfcStairTypeEnum_HALF_TURN_STAIR, kIfcStairTypeEnum_TWO_QUARTER_WINDING_STAIR, kIfcStairTypeEnum_TWO_QUARTER_TURN_STAIR, kIfcStairTypeEnum_THREE_QUARTER_WINDING_STAIR, kIfcStairTypeEnum_THREE_QUARTER_TURN_STAIR, kIfcStairTypeEnum_SPIRAL_STAIR, kIfcStairTypeEnum_DOUBLE_RETURN_STAIR, kIfcStairTypeEnum_CURVED_RUN_STAIR, kIfcStairTypeEnum_TWO_CURVED_RUN_STAIR, kIfcStairTypeEnum_USERDEFINED, kIfcStairTypeEnum_NOTDEFINED, kIfcStairTypeEnum_unset };