How do I get the WSDL from this .asmx URL? - soap

Question

There's this web service I want to connect to. It's fully detailed here: https://simphonytsapi.docs.apiary.io/#reference/calculatetransactiontotals/overview/example-1?console=1
As you can see there's details on the right on how to connect to it. For example to call the CalculateTransactionTotals method of the web service there is:
This .asmx URL: https://private-102dc-simphonytsapi.apiary-mock.com/1/EGateway/SimphonyPosApiWeb.asmx
And these headers:
Content-Type text/xml;charset=UTF-8
SOAPAction http://micros-hosting.com/EGateway/CalculateTransactionTotals
And this example request body:
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<CalculateTransactionTotals xmlns="http://micros-hosting.com/EGateway/">
<vendorCode />
<ppMenuItems />
<ppComboMeals>
<SimphonyPosApi_ComboMeal>
<ComboMealMainItem>
<Condiments />
<MenuItem>
<ItemDiscount>
<DiscObjectNum>0</DiscObjectNum>
</ItemDiscount>
<MiObjectNum>181020001</MiObjectNum>
<MiReference />
<MiWeight />
<MiMenuLevel>1</MiMenuLevel>
<MiSubLevel>1</MiSubLevel>
<MiPriveLevel>0</MiPriveLevel>
</MenuItem>
</ComboMealMainItem>
<ComboMealMenuItem>
<Condiments />
<MenuItem>
<ItemDiscount>
<DiscObjectNum>0</DiscObjectNum>
</ItemDiscount>
<MiObjectNum>181010001</MiObjectNum>
<MiReference />
<MiWeight />
<MiMenuLevel>1</MiMenuLevel>
<MiSubLevel>1</MiSubLevel>
<MiPriveLevel>0</MiPriveLevel>
</MenuItem>
</ComboMealMenuItem>
<ComboMealObjectNum>11</ComboMealObjectNum>
<SideItems>
<SimphonyPosApi_MenuItem>
<Condiments />
<MenuItem>
<ItemDiscount>
<DiscObjectNum>0</DiscObjectNum>
</ItemDiscount>
<MiObjectNum>181030001</MiObjectNum>
<MiReference />
<MiWeight />
<MiMenuLevel>1</MiMenuLevel>
<MiSubLevel>1</MiSubLevel>
<MiPriveLevel>0</MiPriveLevel>
</MenuItem>
</SimphonyPosApi_MenuItem>
<SimphonyPosApi_MenuItem>
<Condiments />
<MenuItem>
<ItemDiscount>
<DiscObjectNum>0</DiscObjectNum>
</ItemDiscount>
<MiObjectNum>299030001</MiObjectNum>
<MiReference />
<MiWeight />
<MiMenuLevel>1</MiMenuLevel>
<MiSubLevel>1</MiSubLevel>
<MiPriveLevel>0</MiPriveLevel>
</MenuItem>
</SimphonyPosApi_MenuItem>
</SideItems>
</SimphonyPosApi_ComboMeal>
</ppComboMeals>
<pSvcCharge>
<SvcChgObjectNum>0</SvcChgObjectNum>
</pSvcCharge>
<pSubtotalDiscount>
<DiscObjectNum>0</DiscObjectNum>
</pSubtotalDiscount>
<revenueCenter>11</revenueCenter>
<orderType>1</orderType>
<employeeNumber>900000092</employeeNumber>
<pTotalsResponse />
</CalculateTransactionTotals>
</soap:Body>
</soap:Envelope>
I need the WSDL to connect to this web service. How do I get it?