}

    override fun isSubTypeOf(subType: KaType, superType: KaType, errorTypePolicy: KaSubtypingErrorTypePolicy): Boolean {
        require(subType is KaFe10Type)
        require(superType is KaFe10Type)
        return getTypeCheckerFor(errorTypePolicy).isSubtypeOf(subType.fe10Type, superType.fe10Type)
    }