fixup! Implement ExposedThing functionality

Author: JKRhb

lib/src/core/implementation/exposed_thing.dart

@@ -324,15 +324,22 @@ class ExposedThing implements scripting_api.ExposedThing, ExposableThing {
 
   @override
   Future<void> handleWriteMultipleProperties(
-    List<String> propertyNames,
-    Content input, {
+    PropertyContentMap inputs, {
     int? formIndex,
     Map<String, Object>? uriVariables,
     Object? data,
-  }) {
-    // TODO: implement handleWriteMultipleProperties
-    throw UnimplementedError();
-  }
+  }) async =>
+      Future.wait(
+        inputs.entries.map(
+          (propertyContentMapEntry) => handleWriteProperty(
+            propertyContentMapEntry.key,
+            propertyContentMapEntry.value,
+            formIndex: formIndex,
+            uriVariables: uriVariables,
+            data: data,
+          ),
+        ),
+      );
 
   @override
   Future<void> handleObserveProperty(

lib/src/core/protocol_interfaces/exposable_thing.dart

@@ -50,8 +50,7 @@ abstract interface class ExposableThing {
 
   /// Handles a `writemultipleproperties` operation triggered by a TD consumer.
   Future<void> handleWriteMultipleProperties(
-    List<String> propertyNames,
-    Content input, {
+    PropertyContentMap inputs, {
     int? formIndex,
     Map<String, Object>? uriVariables,
     Object? data,