...

net/adc_device_netserver.h

@@ -377,12 +377,16 @@ public:
         // _devices.try_emplace(dev_ptr, dev_ptr, std::forward<IdSerialT>(id_ser_func),
         //                      std::forward<AttrIdDeserialT>(attr_id_deser_func),
         //                      std::forward<CmdIdDeserialT>(cmd_id_deser_func));
+
+        return *this;
     }
 
     template <interfaces::adc_device_c DeviceT>
     AdcDeviceNetServer& delDevice(DeviceT* dev_ptr)
     {
         _devices.erase(dev_ptr);
+
+        return *this;
     }
 };