KtSuccessCallInfo:
  call = KtSimpleFunctionCall:
    isImplicitInvoke = false
    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
      dispatchReceiver = null
      extensionReceiver = KtSmartCastedReceiverValue:
        original = KtExplicitReceiverValue:
          expression = a
          isSafeNavigation = false
        smartCastType = kotlin.String
      signature = KtFunctionLikeSignature:
        receiverType = kotlin.String
        returnType = kotlin.Unit
        symbol = /foo(<extension receiver>: kotlin.String): kotlin.Unit
        valueParameters = []
    argumentMapping = {}