Doc generator tweak to skip experimental domains.

pkg/analysis_server/tool/spec/to_html.dart

Index: pkg/analysis_server/tool/spec/to_html.dart
diff --git a/pkg/analysis_server/tool/spec/to_html.dart b/pkg/analysis_server/tool/spec/to_html.dart
index 6f55808f6e63df8a6f3f384732ba8479b005bc60..63f8bb6743bb6d46b185409cce8539fda8391988 100644
--- a/pkg/analysis_server/tool/spec/to_html.dart
+++ b/pkg/analysis_server/tool/spec/to_html.dart
@@ -222,7 +222,10 @@ class ToHtmlVisitor extends HierarchicalApiVisitor
   void generateIndex() {
     h3(() => write('Domains'));
     for (var domain in api.domains) {
-      if (domain.requests.length == 0 && domain.notifications == 0) continue;
+      if (domain.experimental ||
+          (domain.requests.length == 0 && domain.notifications == 0)) {
+        continue;
+      }
       generateDomainIndex(domain);
     }
 
@@ -394,6 +397,9 @@ class ToHtmlVisitor extends HierarchicalApiVisitor
 
   @override
   void visitDomain(Domain domain) {
+    if (domain.experimental) {
+      return;
+    }
     h2('domain', () {
       anchor('domain_${domain.name}', () {
         write('Domain: ${domain.name}');