Add doxygen

source/RobotAPI/components/units/RobotUnit/RobotUnitModules/RobotUnitModuleBase.h

@@ -214,6 +214,10 @@ namespace armarx
             // //////////////////////////////////////// types ///////////////////////////////////////// //
             // //////////////////////////////////////////////////////////////////////////////////////// //
         protected:
+            /**
+             * @brief The type of recursive_mutex used in this class.
+             * This typedef is used to quickly replace the mutex type with a logging mutex type for debugging.
+             */
             using MutexType = std::recursive_timed_mutex;
             using GuardType = std::unique_lock<MutexType>;
             using ClockType = std::chrono::high_resolution_clock;