It can be used to serve the wsdl file of a SOAP Event Source to a (http) client.
Construct a process like: HTTP Receiver -> Retrieve Resources -> Send HTTP Response
Now the WSDL file for a SOAP service can be retreived using the http request
http://<host>:<port>/<path>/<resourceName>?wsdl
where 'path' is the folder path to the SOAP Event Source process and 'resourceName' is the name of the process
Example : http://purch:8877/Purchasing/GetPurchaseOrder?wsdl