Frog dart:dom using interfaces and native implementation classes.

client/dom/generated/src/frog/SVGFEOffsetElement.dart

 
-class SVGFEOffsetElement extends SVGElement native "*SVGFEOffsetElement" {
+class SVGFEOffsetElementJS extends SVGElementJS implements SVGFEOffsetElement native "*SVGFEOffsetElement" {
 
-  SVGAnimatedNumber get dx() native "return this.dx;";
+  SVGAnimatedNumberJS get dx() native "return this.dx;";
 
-  SVGAnimatedNumber get dy() native "return this.dy;";
+  SVGAnimatedNumberJS get dy() native "return this.dy;";
 
-  SVGAnimatedString get in1() native "return this.in1;";
+  SVGAnimatedStringJS get in1() native "return this.in1;";
 
   // From SVGFilterPrimitiveStandardAttributes
 
-  SVGAnimatedLength get height() native "return this.height;";
+  SVGAnimatedLengthJS get height() native "return this.height;";
 
-  SVGAnimatedString get result() native "return this.result;";
+  SVGAnimatedStringJS get result() native "return this.result;";
 
-  SVGAnimatedLength get width() native "return this.width;";
+  SVGAnimatedLengthJS get width() native "return this.width;";
 
-  SVGAnimatedLength get x() native "return this.x;";
+  SVGAnimatedLengthJS get x() native "return this.x;";
 
-  SVGAnimatedLength get y() native "return this.y;";
+  SVGAnimatedLengthJS get y() native "return this.y;";
 
   // From SVGStylable
 
-  SVGAnimatedString get className() native "return this.className;";
+  SVGAnimatedStringJS get className() native "return this.className;";
 
-  CSSStyleDeclaration get style() native "return this.style;";
+  CSSStyleDeclarationJS get style() native "return this.style;";
 
-  CSSValue getPresentationAttribute(String name) native;
+  CSSValueJS getPresentationAttribute(String name) native;
 }