MandatoryDimension field from ax4 to ax2012

Does anyone know how to handle MandatoryDimension field from LedgerTable(Ax4) in Ax2012 ? How to upgrade it…

For example:

if(LedgerTable.MandatoryDimension[dimCount] == LedgerFieldControl::Optional ||
LedgerTable.MandatoryDimension[dimCount] == LedgerFieldControl::Standard)

{

}

nobody knows how to handle MandatoryDimension field in upgrade to Ax2012 ?