How to get the wsdl file from a webservice's URL

Question

I want to get the WSDL file for a webservice and the only thing I have is its URL (like webservice.example/foo).

If I use the URL directly only an error response is

Answer 1

to get the WSDL (Web Service Description Language) from a Web Service URL.

Is possible from SOAP Web Services:

http://www.w3schools.com/xml/tempconvert.asmx

to get the WSDL we have only to add ?WSDL , for example:

http://www.w3schools.com/xml/tempconvert.asmx?WSDL