override val isLateInit: Boolean
        get() = withValidityAssertion { descriptor.isLateInit }

    override val isConst: Boolean
        get() = withValidityAssertion { descriptor.isConst }

    override val isVal: Boolean
        get() = withValidityAssertion { !descriptor.isVar }

    override val isExtension: Boolean
        get() = withValidityAssertion { descriptor.isExtension }