Method retrieveValue

src/data/helper/transform.ts:148–150

* Only support by dimension index. * No need to support by dimension name in transform function, * because transform function is not case-specific, no need to use name literally.

(dataIndex: number, dimIndex: DimensionIndex)

     * because transform function is not case-specific, no need to use name literally.
     */
    retrieveValue(dataIndex: number, dimIndex: DimensionIndex): OptionDataValue {
        return;
    }

    retrieveValueFromItem(dataItem: DataTransformDataItem, dimIndex: DimensionIndex): OptionDataValue {
        return;