Translate Java's @Override into Dart's @override.

pkg/analyzer/lib/src/generated/instrumentation.dart

Index: pkg/analyzer/lib/src/generated/instrumentation.dart
diff --git a/pkg/analyzer/lib/src/generated/instrumentation.dart b/pkg/analyzer/lib/src/generated/instrumentation.dart
index ee22f0ba0b817f25961a65e2a9d6f60238037d51..73d621458ff53fd2ff2bb2602e830a8357700ec4 100644
--- a/pkg/analyzer/lib/src/generated/instrumentation.dart
+++ b/pkg/analyzer/lib/src/generated/instrumentation.dart
@@ -102,34 +102,47 @@ class Instrumentation {
 }
 
 class InstrumentationBuilder_Instrumentation_NULL_INSTRUMENTATION_BUILDER implements InstrumentationBuilder {
+  @override
   InstrumentationBuilder data(String name, bool value) => this;
 
+  @override
   InstrumentationBuilder data2(String name, int value) => this;
 
+  @override
   InstrumentationBuilder data3(String name, String value) => this;
 
+  @override
   InstrumentationBuilder data4(String name, List<String> value) => this;
 
+  @override
   InstrumentationLevel get instrumentationLevel => InstrumentationLevel.OFF;
 
+  @override
   void log() {
   }
 
+  @override
   void log2(int minTimeToLong) {
   }
 
+  @override
   InstrumentationBuilder metric(String name, bool value) => this;
 
+  @override
   InstrumentationBuilder metric2(String name, int value) => this;
 
+  @override
   InstrumentationBuilder metric3(String name, String value) => this;
 
+  @override
   InstrumentationBuilder metric4(String name, List<String> value) => this;
 
+  @override
   InstrumentationBuilder record(Exception exception) => this;
 }
 
 class InstrumentationLogger_Instrumentation_NULL_LOGGER implements InstrumentationLogger {
+  @override
   InstrumentationBuilder createBuilder(String name) => Instrumentation._NULL_INSTRUMENTATION_BUILDER;
 }