/// <summary>
 /// Registers a serializer for given content type. If the content type already has serializer associated, then overrides the old value.
 /// </summary>
 /// <param name="contentType"></param>
 /// <param name="serializer"></param>
 public void Register(string contentType, IRestRequestBodySerializer serializer)
 {
     if (!_serializerMap.ContainsKey(contentType))
     {
         _serializerMap.Add(contentType, serializer);
     }
     else
     {
         _serializerMap[contentType] = serializer;
     }
 }
 /// <summary>
 /// Registers a serializer for given content type. If the content type already has serializer associated, then overrides the old value.
 /// </summary>
 /// <param name="contentType"></param>
 /// <param name="serializer"></param>
 public void Register(string contentType, IRestRequestBodySerializer serializer)
 {
     if (!_serializerMap.ContainsKey(contentType))
     {
         _serializerMap.Add(contentType, serializer);
     }
     else
     {
         _serializerMap[contentType] = serializer;
     }
 }