dont convert result multiple times

Author: Kaleidox

src/main/java/org/comroid/interaction/adapter/stdio/StreamAdapter.java

@@ -54,6 +54,7 @@ public Class<String> getResponseType() {
     @Override
     public void sendResponse(InteractionContext context, String response) {
         output.println(response);
+        log.info(response);
     }
 
     @Override

src/main/java/org/comroid/interaction/model/InteractionContext.java

@@ -114,11 +114,16 @@ public void invoke() {
 
     @SuppressWarnings("unchecked")
     private void handleResponse(final Object response) {
-        components(ResponseConverter.class).map(converter -> converter.convertResponse(response)).filter(Objects::nonNull).forEach(formatted -> {
-            var fType = formatted.getClass();
-            components(ResponseHandler.class).filter(handler -> handler.getResponseType().isAssignableFrom(fType))
-                    .forEach(handler -> handler.sendResponse(this, formatted));
-        });
+        components(ResponseConverter.class).distinct()
+                .map(converter -> converter.convertResponse(response))
+                .distinct()
+                .filter(Objects::nonNull)
+                .forEach(formatted -> {
+                    var fType = formatted.getClass();
+                    components(ResponseHandler.class).distinct()
+                            .filter(handler -> handler.getResponseType().isAssignableFrom(fType))
+                            .forEach(handler -> handler.sendResponse(this, formatted));
+                });
     }
 
     private static Supplier<RuntimeException> noSuchCommand(String name) {