private fun PsiElement.isWhileLoopCondition() =
        unwrapQualified<KtWhileExpressionBase> { whileExpr, cond -> whileExpr.condition == cond } != null

    private fun PsiElement.isIfCondition() =
        unwrapQualified<KtIfExpression> { ifExpr, cond -> ifExpr.condition == cond } != null

    override fun isDefinitelyNull(expression: KtExpression): Boolean =