KtErrorCallInfo:
  candidateCalls = [
    KtSimpleFunctionCall:
      isImplicitInvoke = true
      partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
        dispatchReceiver = null
        extensionReceiver = KtExplicitReceiverValue:
          expression = x
          isSafeNavigation = false
          type = kotlin.Int
        signature = KtFunctionLikeSignature:
          receiverType = kotlin.Int
          returnType = kotlin.Unit
          symbol = invoke(<extension receiver>: kotlin.Int, a: kotlin.String): kotlin.Unit
          valueParameters = [
            KtVariableLikeSignature:
              name = a
              receiverType = null
              returnType = kotlin.String
              symbol = a: kotlin.String
              callableIdIfNonLocal = null
          ]
          callableIdIfNonLocal = null
      typeArgumentsMapping = {}
      argumentMapping = {},
    KtSimpleFunctionCall:
      isImplicitInvoke = true
      partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
        dispatchReceiver = null
        extensionReceiver = KtExplicitReceiverValue:
          expression = x
          isSafeNavigation = false
          type = kotlin.Int
        signature = KtFunctionLikeSignature:
          receiverType = kotlin.Int
          returnType = kotlin.Unit
          symbol = invoke(<extension receiver>: kotlin.Int, b: kotlin.Boolean): kotlin.Unit
          valueParameters = [
            KtVariableLikeSignature:
              name = b
              receiverType = null
              returnType = kotlin.Boolean
              symbol = b: kotlin.Boolean
              callableIdIfNonLocal = null
          ]
          callableIdIfNonLocal = null
      typeArgumentsMapping = {}
      argumentMapping = {}
  ]
  diagnostic = ERROR<NONE_APPLICABLE: None of the following candidates is applicable:
  fun Int.invoke(a: String): Unit
  fun Int.invoke(b: Boolean): Unit>