Make visibleLength/visibleOffset informative.

pkg/analyzer/lib/src/summary/format.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // This file has been automatically generated.  Please do not edit it manually.
 // To regenerate the file, use the script "pkg/analyzer/tool/generate_files".
 
 library analyzer.src.summary.format;
 
 import 'flat_buffers.dart' as fb;
@@ skipping 5352 matching lines @@
     _localFunctions?.forEach((b) => b.flushInformative());
     _localLabels = null;
     _localVariables = null;
     _nameEnd = null;
     _nameOffset = null;
     _parameters?.forEach((b) => b.flushInformative());
     _periodOffset = null;
     _redirectedConstructor?.flushInformative();
     _returnType?.flushInformative();
     _typeParameters?.forEach((b) => b.flushInformative());
+    _visibleLength = null;
+    _visibleOffset = null;
   }
 
   /**
    * Accumulate non-[informative] data into [signature].
    */
   void collectApiSignature(api_sig.ApiSignature signature) {
     signature.addString(this._name ?? '');
     if (this._parameters == null) {
       signature.addInt(0);
     } else {
@@ skipping 40 matching lines @@
     }
     signature.addString(this._redirectedConstructorName ?? '');
     if (this._localFunctions == null) {
       signature.addInt(0);
     } else {
       signature.addInt(this._localFunctions.length);
       for (var x in this._localFunctions) {
         x?.collectApiSignature(signature);
       }
     }
-    signature.addInt(this._visibleLength ?? 0);
-    signature.addInt(this._visibleOffset ?? 0);
     signature.addInt(this._constCycleSlot ?? 0);
     signature.addBool(this._bodyExpr != null);
     this._bodyExpr?.collectApiSignature(signature);
   }
 
   fb.Offset finish(fb.Builder fbBuilder) {
     fb.Offset offset_annotations;
     fb.Offset offset_bodyExpr;
     fb.Offset offset_codeRange;
     fb.Offset offset_constantInitializers;
@@ skipping 4049 matching lines @@
     "propagatedTypeSlot": propagatedTypeSlot,
     "type": type,
     "visibleLength": visibleLength,
     "visibleOffset": visibleOffset,
   };
 
   @override
   String toString() => convert.JSON.encode(toJson());
 }