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 /MarketplaceReferralCountsReportChartRequest HTTP/1.1 
Host: cdnapidev.greysheet.com 
Accept: application/xml
 
HTTP/1.1 200 OK
Content-Type: application/xml
Content-Length: length
<MarketplaceReferralCountsChartResponse xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/Cdn.Api.ResponseObjects">
  <CachedResponse>false</CachedResponse>
  <ErrorText>String</ErrorText>
  <OpCode>0</OpCode>
  <RequestTime>String</RequestTime>
  <ResponseTime>String</ResponseTime>
  <Total>0</Total>
  <TotalExecutionTime>String</TotalExecutionTime>
  <Data xmlns:d2p1="http://schemas.datacontract.org/2004/07/Cdn.Api.DatabaseObjects">
    <d2p1:MarketplaceReferralCountsChartItem>
      <d2p1:MarkplaceId>String</d2p1:MarkplaceId>
      <d2p1:Title>String</d2p1:Title>
      <d2p1:ViewDate>String</d2p1:ViewDate>
      <d2p1:Views>0</d2p1:Views>
    </d2p1:MarketplaceReferralCountsChartItem>
  </Data>
</MarketplaceReferralCountsChartResponse>