KtNameReferenceExpression(47,53): 'length'
  KaCallResolutionSuccess:
    call = KaSimpleVariableAccessCall:
      contextArguments = []
      dispatchReceiver = KaExplicitReceiverValue:
        expression = out
        isSafeNavigation = false
        type = {kotlin.text.StringBuilder=} java.lang.StringBuilder
      extensionReceiver = null
      isContextSensitive = false
      kind = Read
      signature = KaVariableSignature:
        name = length
        receiverType = null
        returnType = kotlin.Int
        symbol = val length: kotlin.Int
        contextParameters = []
        callableId = java/lang/StringBuilder.length
      typeArgumentsMapping = {}
