A -> UClass (name = A)
init -> UParameter (name = init)
Int -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
privateProp -> UField (name = privateProp)
mutableProp -> UField (name = mutableProp)
Int -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    = -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
    init -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
add -> UMethod (name = add)
x -> UParameter (name = x)
Int -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
Int -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    result -> [!] UnknownKotlinExpression (PROPERTY)
    privateProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    privateProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    = -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
    x -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    privateProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
properties -> UMethod (name = properties)
    a -> [!] UnknownKotlinExpression (PROPERTY)
    A -> [!] UnknownKotlinExpression (CALL_EXPRESSION)
    x -> [!] UnknownKotlinExpression (PROPERTY)
    - -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
    a -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    a -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    = -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
    a -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    += -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
    x -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    ++ -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
    a -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    a -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    -- -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
A -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
ext -> UMethod (name = ext)
    x -> [!] UnknownKotlinExpression (PROPERTY)
    - -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    = -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    += -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
    x -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    ++ -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    mutableProp -> [!] UnknownKotlinExpression (REFERENCE_EXPRESSION)
    -- -> [!] UnknownKotlinExpression (OPERATION_REFERENCE)
