refa: article (#757)

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/models/dynamics/opus_detail/rich.dart

@@ -0,0 +1,31 @@
+import 'style.dart';
+
+class Rich {
+  Style? style;
+  String? jumpUrl;
+  String? origText;
+  String? text;
+
+  Rich({
+    this.style,
+    this.jumpUrl,
+    this.origText,
+    this.text,
+  });
+
+  factory Rich.fromJson(Map<String, dynamic> json) => Rich(
+        style: json['style'] == null
+            ? null
+            : Style.fromJson(json['style'] as Map<String, dynamic>),
+        jumpUrl: json['jump_url'] as String?,
+        origText: json['orig_text'] as String?,
+        text: json['text'] as String?,
+      );
+
+  Map<String, dynamic> toJson() => {
+        'style': style?.toJson(),
+        'jump_url': jumpUrl,
+        'orig_text': origText,
+        'text': text,
+      };
+}