Controllers emulate the operation of Input Gateways

protocol/artistic/artnet/controller.h

@@ -24,14 +24,19 @@
 #pragma once
 
 #include "device.h"
+#include "gateway.h"
 
 namespace ARTNET {
 
 /**
  * @brief \cite ARTNET A generic term describing an Art-Net device with the
- * primary task of generating control data. For example, a lighting console.
+ * primary task of generating control data.
+ *
+ * \cite ARTNET Controllers emulate the operation of Input Gateways.
  */
-class Controller : public virtual Device
+class Controller
+    : public Device
+    , public InputGateway
 {
 public:
   explicit Controller();