Final commit.

packages/holzleitner_api/test/sync_contact_channel_test.dart

@@ -0,0 +1,27 @@
+import 'package:test/test.dart';
+import 'package:holzleitner_api/holzleitner_api.dart';
+
+// tests for SyncContactChannel
+void main() {
+  final instance = SyncContactChannelBuilder();
+  // TODO add properties to the builder and call build()
+
+  group(SyncContactChannel, () {
+    // ContactKind kind
+    test('to test the property `kind`', () async {
+      // TODO
+    });
+
+    // 1-basiert: spiegelt ERP-Spaltenposition (Telefon → 1, Telefon2 → 2, …).
+    // int position
+    test('to test the property `position`', () async {
+      // TODO
+    });
+
+    // String value
+    test('to test the property `value`', () async {
+      // TODO
+    });
+
+  });
+}