v10

test/tree/meter_topology_result_1.json

@@ -0,0 +1,16 @@
+{
+  "set_error_type": [],
+  "phase_type": [],
+  "hierarchy": {
+    "5": [
+      {
+        "meter_id": "180001507008",
+        "error_type": null,
+        "is_ltu": true,
+        "addr": "江西省宜春市袁州区温汤镇社埠村社布台区",
+        "phase": "0"
+      }
+    ]
+  },
+  "meter_set": []
+}

test/tree/node.dart

@@ -1,3 +1,26 @@
+class A<T extends NameAble>{
+  final T data;
+
+
+  A(this.data);
+
+  void printName(){
+    print(data.name);
+  }
+}
+
+mixin NameAble{
+  String get name;
+}
+
+class B with NameAble{
+  @override
+  String get name => 'B';
+
+}
+
+
+
 class Node {
   final String value;
   final List<Node> children;