refa: article (#757)

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

lib/models/dynamics/opus_detail/fallback_layers.dart

@@ -0,0 +1,24 @@
+import 'layer.dart';
+
+class FallbackLayers {
+	bool? isCriticalGroup;
+	List<Layer>? layers;
+
+	FallbackLayers({this.isCriticalGroup, this.layers});
+
+	factory FallbackLayers.fromJson(Map<String, dynamic> json) {
+		return FallbackLayers(
+			isCriticalGroup: json['is_critical_group'] as bool?,
+			layers: (json['layers'] as List<dynamic>?)
+						?.map((e) => Layer.fromJson(e as Map<String, dynamic>))
+						.toList(),
+		);
+	}
+
+
+
+	Map<String, dynamic> toJson() => {
+				'is_critical_group': isCriticalGroup,
+				'layers': layers?.map((e) => e.toJson()).toList(),
+			};
+}