To override the Content-type in your clients, use the HTTP Accept Header, append  the .xml suffix or  ?format=xml
 
		
        
        HTTP + XML
         The following are sample HTTP requests and responses. 
            The placeholders shown need to be replaced with actual values.
GET /values/endpoint/unique HTTP/1.1 
Host: evovoice.io 
Accept: application/xml
 
HTTP/1.1 200 OK
Content-Type: application/xml
Content-Length: length
<GetUniqueEndpointValueResponse xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/Voice.Api.Flows.Values">
  <Value>String</Value>
</GetUniqueEndpointValueResponse>