*
 * Named functions do not consider their bodies used if
 *  - the function body is a block e.g., `fun foo(): Int { return bar }` or
 *  - the function itself returns Unit
 */
private fun doesNamedFunctionUseBody(namedFunction: KtNamedFunction, body: PsiElement): Boolean = when {
    // The body is a block expression e.g., fun foo(): Int { return bar }
    namedFunction.bodyBlockExpression == body ->
        false

            } else {
                analysisSession.builtinTypes.UNIT
            }
        }
        is FirExpression -> fir.resolvedType.asKtType()
        is FirNamedReference -> fir.getCorrespondingTypeIfPossible()?.asKtType()
        is FirStatement -> with(analysisSession) { builtinTypes.UNIT }
        is FirTypeRef, is FirImport, is FirPackageDirective, is FirLabel, is FirTypeParameterRef -> null

        return when (evaluated.kind) {
            ConstantValueKind.Byte -> KtConstantValue.KtByteConstantValue(value as Byte, psi)
            ConstantValueKind.Int -> KtConstantValue.KtIntConstantValue(value as Int, psi)
            ConstantValueKind.Long -> KtConstantValue.KtLongConstantValue(value as Long, psi)
            ConstantValueKind.Short -> KtConstantValue.KtShortConstantValue(value as Short, psi)