UFile (package = )
    UClass (name = PropertyReferencesKt)
        UMethod (name = properties)
            UBlockExpression
                [!] UnknownKotlinExpression (PROPERTY)
                [!] UnknownKotlinExpression (PROPERTY)
                [!] UnknownKotlinExpression (BINARY_EXPRESSION)
                [!] UnknownKotlinExpression (BINARY_EXPRESSION)
                [!] UnknownKotlinExpression (PREFIX_EXPRESSION)
                [!] UnknownKotlinExpression (POSTFIX_EXPRESSION)
        UMethod (name = ext)
            UParameter (name = $this$ext)
            UBlockExpression
                [!] UnknownKotlinExpression (PROPERTY)
                [!] UnknownKotlinExpression (BINARY_EXPRESSION)
                [!] UnknownKotlinExpression (BINARY_EXPRESSION)
                [!] UnknownKotlinExpression (PREFIX_EXPRESSION)
                [!] UnknownKotlinExpression (POSTFIX_EXPRESSION)
    UClass (name = A)
        UField (name = privateProp)
            ULiteralExpression (value = 0)
        UField (name = mutableProp)
        UMethod (name = A)
            UParameter (name = init)
            UBlockExpression
                UBlockExpression
                    [!] UnknownKotlinExpression (BINARY_EXPRESSION)
        UMethod (name = getMutableProp)
        UMethod (name = setMutableProp)
            UParameter (name = value)
        UMethod (name = add)
            UParameter (name = x)
            UBlockExpression
                [!] UnknownKotlinExpression (PROPERTY)
                [!] UnknownKotlinExpression (BINARY_EXPRESSION)
                UReturnExpression
                    USimpleNameReferenceExpression (identifier = privateProp)
