Make dart:dom implementation types private so they don't muddle the docs.

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

Index: client/dom/generated/src/frog/SVGFEImageElement.dart
diff --git a/client/dom/generated/src/frog/SVGFEImageElement.dart b/client/dom/generated/src/frog/SVGFEImageElement.dart
index 41e4955d7d0857267db2d741de7f16c55e3b1ffe..3711432a3ba29e59b082398a654fdf92f03a6b20 100644
--- a/client/dom/generated/src/frog/SVGFEImageElement.dart
+++ b/client/dom/generated/src/frog/SVGFEImageElement.dart
@@ -1,11 +1,11 @@
 
-class SVGFEImageElementJs extends SVGElementJs implements SVGFEImageElement native "*SVGFEImageElement" {
+class _SVGFEImageElementJs extends _SVGElementJs implements SVGFEImageElement native "*SVGFEImageElement" {
 
-  SVGAnimatedPreserveAspectRatioJs get preserveAspectRatio() native "return this.preserveAspectRatio;";
+  _SVGAnimatedPreserveAspectRatioJs get preserveAspectRatio() native "return this.preserveAspectRatio;";
 
   // From SVGURIReference
 
-  SVGAnimatedStringJs get href() native "return this.href;";
+  _SVGAnimatedStringJs get href() native "return this.href;";
 
   // From SVGLangSpace
 
@@ -19,25 +19,25 @@ class SVGFEImageElementJs extends SVGElementJs implements SVGFEImageElement nati
 
   // From SVGExternalResourcesRequired
 
-  SVGAnimatedBooleanJs get externalResourcesRequired() native "return this.externalResourcesRequired;";
+  _SVGAnimatedBooleanJs get externalResourcesRequired() native "return this.externalResourcesRequired;";
 
   // From SVGFilterPrimitiveStandardAttributes
 
-  SVGAnimatedLengthJs get height() native "return this.height;";
+  _SVGAnimatedLengthJs get height() native "return this.height;";
 
-  SVGAnimatedStringJs get result() native "return this.result;";
+  _SVGAnimatedStringJs get result() native "return this.result;";
 
-  SVGAnimatedLengthJs get width() native "return this.width;";
+  _SVGAnimatedLengthJs get width() native "return this.width;";
 
-  SVGAnimatedLengthJs get x() native "return this.x;";
+  _SVGAnimatedLengthJs get x() native "return this.x;";
 
-  SVGAnimatedLengthJs get y() native "return this.y;";
+  _SVGAnimatedLengthJs get y() native "return this.y;";
 
   // From SVGStylable
 
-  SVGAnimatedStringJs get className() native "return this.className;";
+  _SVGAnimatedStringJs get className() native "return this.className;";
 
-  CSSStyleDeclarationJs get style() native "return this.style;";
+  _CSSStyleDeclarationJs get style() native "return this.style;";
 
-  CSSValueJs getPresentationAttribute(String name) native;
+  _CSSValueJs getPresentationAttribute(String name) native;
 }