Enable enum and deferred import support

pkg/analysis_server/lib/src/generated_protocol.dart

Index: pkg/analysis_server/lib/src/generated_protocol.dart
diff --git a/pkg/analysis_server/lib/src/generated_protocol.dart b/pkg/analysis_server/lib/src/generated_protocol.dart
index 2f605073b36bc2785ea32ccfed69248feca0d985..44c6b7c679f64735918b4f37ad83206355bd1367 100644
--- a/pkg/analysis_server/lib/src/generated_protocol.dart
+++ b/pkg/analysis_server/lib/src/generated_protocol.dart
@@ -5419,17 +5419,23 @@ class AnalysisErrorType implements Enum {
  */
 class AnalysisOptions implements HasToJson {
   /**
+   * Deprecated/
+   *
    * True if the client wants to enable support for the proposed async feature.
    */
   bool enableAsync;
 
   /**
+   * Deprecated/
+   *
    * True if the client wants to enable support for the proposed deferred
    * loading feature.
    */
   bool enableDeferredLoading;
 
   /**
+   * Deprecated/
+   *
    * True if the client wants to enable support for the proposed enum feature.
    */
   bool enableEnums;