Method reference

src/3rdparty/QXlsx/source/xlsxcellformula.cpp:135–138

! * Returns the reference cells of the formula. For normal formula, * this will return an invalid CellRange object. */

 * this will return an invalid CellRange object.
 */
CellRange CellFormula::reference() const
{
    return d ? d->reference : CellRange();
}

/*!
 * Returns whether the formula is valid.