String getContentType ( )
===== Returns =====
* **String** \\ Transmitted HTTP content type
===== Example =====
$Request = new RestRequest();
// Called endpoint is: [PUT] https://www.domain.com/webservice/accounting/booking
// Content is: "id:5,account:1234,name:Mr. Smith,amount:592.30"
$ContentType = $Request->getContentType(); // "text/plain"
~~NOTOC~~