diff --git a/Modules/CppRestSdk/include/mitkRESTManager.h b/Modules/CppRestSdk/include/mitkRESTManager.h
index e3205f9c59..5566240316 100644
--- a/Modules/CppRestSdk/include/mitkRESTManager.h
+++ b/Modules/CppRestSdk/include/mitkRESTManager.h
@@ -1,86 +1,107 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #ifndef mitkRESTManager_h
 #define mitkRESTManager_h
 
 #include <mitkIRESTManager.h>
 #include <mitkRESTClientMicroService.h>
 #include <mitkRESTServerMicroService.h>
 
 #include <MitkCppRestSdkExports.h>
 
 namespace mitk
 {
   class MITKCPPRESTSDK_EXPORT RESTManager : public IRESTManager
   {
 
   public:
     RESTManager();
     ~RESTManager() override;
 
     /**
      * @brief Executes a HTTP request in the mitkRESTClientMicroService class
      *
      * @param uri defines the URI the request is send to
      * @param type the RequestType of the HTTP request (optional)
      * @param body the body for the request (optional)
      * @param filePath the file path to store the request to
      * @return task to wait for
      */
     pplx::task<web::json::value> SendRequest(const web::uri &uri,
                                              const RequestType &type = get,
                                              const web::json::value &body= NULL,
                                              const utility::string_t &filePath = L"") override;
     
     /**
      * @brief starts listening for requests if there isn't another observer listening and the port is free
      *
      * @param uri defines the URI for which incoming requests should be send to the observer
      * @param observer the observer which handles the incoming requests
      */
     void ReceiveRequest(const web::uri &uri, IRESTObserver *observer) override;
 
     /**
      * @brief Handles incoming requests by notifying the observer which should receive it
      *
      * @param uri defines the URI of the request
      * @param body the body of the request
      * @return the data which is modified by the notified observer
      */
     web::json::value Handle(const web::uri &uri, web::json::value &body) override;
 
     /**
      * @brief Handles the deletion of an observer for all or a specific uri
      *
      * @param observer the observer which shouldn't receive requests anymore
      * @param uri the uri for which the observer doesn't handle requests anymore (optional)
      */
     virtual void HandleDeleteObserver(IRESTObserver *observer, const web::uri &uri) override;
 
     virtual std::map<int, IRESTServerMicroService *> GetM_ServerMap() override;
     virtual std::map<std::pair<int, utility::string_t>, IRESTObserver *> GetM_Observers() override;
 
+    /**
+     * @brief adds an observer if a port is free, called by ReceiveRequest method
+     *
+     * @param uri the uri which builds the key for the observer map
+     * @param observer the observer which is added
+     */
     void AddObserver(const web::uri &uri, IRESTObserver *observer);
+
+    /**
+     * @brief handles server management if there is already a server under a port, called by ReceiveRequest method
+     *
+     * @param uri the uri which which is requested to be added
+     * @param observer the observer which proceeds the request
+     */
     void ServerUnderPort(const web::uri &uri, IRESTObserver *observer);
+
+    /**
+     * @brief deletes an observer, called by HandleDeleteObserver method
+     *
+     * @param it the iterator comparing the observers in HandleDeleteObserver method
+     * @param the uri for which the observer doesn't want to receive requests anymore
+     * @return bool if there is another observer under the port
+     */
     bool DeleteObserver(std::map < std::pair<int, utility::string_t>, IRESTObserver *>::iterator &it, const web::uri &uri);
 
   protected:
     std::map<int, IRESTServerMicroService *> m_ServerMap;                     // Map with port server pairs
     std::map<std::pair<int, utility::string_t>, IRESTObserver *> m_Observers; // Map with all observers
   };
 } // namespace mitk
 #endif // !mitkRESTManager_h