API C LegendaryCrafting.IsUpgradeItemValidForRuneforgeLegendary

Needs summary. isValid = C_LegendaryCrafting.IsUpgradeItemValidForRuneforgeLegendary(runeforgeLegendary, upgradeItem)

Arguments

 * runeforgeLegendary : ItemLocationMixin
 * upgradeItem : ItemLocationMixin

Returns

 * isValid : boolean