KtSafeQualifiedExpression(45,49): 'a?.y'
  KaApplicableCallCandidate:
    candidate = KaSimpleVariableAccessCall:
      contextArguments = []
      dispatchReceiver = KaExplicitReceiverValue:
        expression = a
        isSafeNavigation = true
        type = A
      extensionReceiver = null
      isContextSensitive = false
      kind = Read
      signature = KaVariableSignature:
        name = y
        receiverType = null
        returnType = kotlin.Int
        symbol = val y: kotlin.Int
        contextParameters = []
        callableId = /A.y
      typeArgumentsMapping = {}
    isInBestCandidates = true
