fix final several errors

com.unity.uiwidgets/Editor/UIWidgetsPanelEditor.cs

             var antiAliasingProperty = serializedObject.FindProperty("hardwareAntiAliasing");
             EditorGUILayout.PropertyField(pixelRatioProperty);
             EditorGUILayout.PropertyField(antiAliasingProperty);
-            serializedObject.ApplyModifiedProperties();
+            serializedObject.ApplyModifiedProperties(); 
         }
     }
 }

com.unity.uiwidgets/Runtime/widgets/app.cs

         }
 
         public static Window of(GameObject gameObject) {
+            D.assert(false, () => "window.Of is not implemented yet!");
+            return null;
+            
+            /*
+            */
         }
 
         public override bool updateShouldNotify(InheritedWidget oldWidget) {

com.unity.uiwidgets/Runtime/widgets/image.cs

             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool gaplessPlayback = false,
-            FilterMode filterMode = FilterMode.Bilinear
+            FilterQuality filterQuality = FilterQuality.low
         ) : base(key) {
             D.assert(image != null);
             this.image = image;
             this.repeat = repeat;
             this.centerSlice = centerSlice;
             this.gaplessPlayback = gaplessPlayback;
-            this.filterMode = filterMode;
+            this.filterQuality = filterQuality;
         }
 
         public static Image network(
             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool gaplessPlayback = false,
-            FilterMode filterMode = FilterMode.Bilinear,
+            FilterQuality filterQuality = FilterQuality.low,
             IDictionary<string, string> headers = null
         ) {
             var networkImage = new NetworkImage(src, scale, headers);
                 repeat,
                 centerSlice,
                 gaplessPlayback,
-                filterMode
+                filterQuality
             );
         }
 
             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool gaplessPlayback = false,
-            FilterMode filterMode = FilterMode.Bilinear
+            FilterQuality filterQuality = FilterQuality.low
         ) {
             var fileImage = new FileImage(file, scale);
             return new Image(
                 repeat,
                 centerSlice,
                 gaplessPlayback,
-                filterMode
+                filterQuality
             );
         }
 
             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool gaplessPlayback = false,
-            FilterMode filterMode = FilterMode.Bilinear
+            FilterQuality filterQuality = FilterQuality.low
         ) {
             var image = scale != null
                 ? (AssetBundleImageProvider) new ExactAssetImage(name, bundle: bundle, scale: scale.Value)
                 repeat,
                 centerSlice,
                 gaplessPlayback,
-                filterMode
+                filterQuality
             );
         }
 
             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool gaplessPlayback = false,
-            FilterMode filterMode = FilterMode.Bilinear
+            FilterQuality filterQuality = FilterQuality.low
         ) {
             var memoryImage = new MemoryImage(bytes, scale);
             return new Image(
                 repeat,
                 centerSlice,
                 gaplessPlayback,
-                filterMode
+                filterQuality
             );
         }
 
         public readonly Color color;
-        public readonly FilterMode filterMode;
+        public readonly FilterQuality filterQuality;
         public readonly BlendMode colorBlendMode;
         public readonly BoxFit? fit;
         public readonly Alignment alignment;
             properties.add(new EnumProperty<ImageRepeat>("repeat", repeat, defaultValue: ImageRepeat.noRepeat));
             properties.add(new DiagnosticsProperty<Rect>("centerSlice", centerSlice,
                 defaultValue: foundation_.kNullDefaultValue));
-            properties.add(new EnumProperty<FilterMode>("filterMode", filterMode, foundation_.kNullDefaultValue));
+            properties.add(new EnumProperty<FilterQuality>("filterQuality", filterQuality, foundation_.kNullDefaultValue));
         }
     }
 
                 repeat: widget.repeat,
                 centerSlice: widget.centerSlice,
                 invertColors: _invertColors,
-                filterMode: widget.filterMode
+                filterQuality: widget.filterQuality
             );
 
             return image;

com.unity.uiwidgets/Runtime/widgets/text_selection.cs

 
         public void handlePaste(TextSelectionDelegate selectionDelegate) {
             TextEditingValue value = selectionDelegate.textEditingValue; // Snapshot the input before using `await`.
-            Clipboard.getData(Clipboard.kTextPlain).Then((data) => {
+            Clipboard.getData(Clipboard.kTextPlain).then_((data) => {
                 if (data != null) {
                     selectionDelegate.textEditingValue = new TextEditingValue(
                         text: value.selection.textBefore(value.text)