Clarify deprecation notices for package:analyzer/analyzer.dart

Change-Id: I487360347f7e8b8f9aa513ed9f638a3af912e3a2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150960
Reviewed-by: Konstantin Shcheglov <[email protected]>
Reviewed-by: Brian Wilkerson <[email protected]>
Commit-Queue: Paul Berry <[email protected]>

Author: stereotype441

pkg/analyzer/lib/analyzer.dart

@@ -2,7 +2,10 @@
 // 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.
 
-@deprecated
+/// This library is no longer supported, but most of the functionality it
+/// provides is available through supported analyzer APIs.  See specific methods
+/// below for more information about their supported replacements.
+@Deprecated('See package:analyzer/analyzer.dart file for details')
 library analyzer;
 
 import 'dart:io';
@@ -67,12 +70,12 @@ CompilationUnit parseCompilationUnit(String contents,
 /// If [parseFunctionBodies] is [false] then only function signatures will be
 /// parsed.  (Currently broken; function bodies are always parsed).
 ///
-/// Deprecated - please use the `parseFile2` function
+/// Deprecated - please use the `parseFile` function
 /// (from package:analyzer/dart/analysis/utilities.dart) instead.
 ///
-/// Note that `parseFile2` does not support the `parseFunctionBodies` option;
+/// Note that `parseFile` does not support the `parseFunctionBodies` option;
 /// callers that don't require function bodies should simply ignore them.
-@Deprecated('Please use parseFile2 instead')
+@Deprecated('Please use parseFile instead')
 CompilationUnit parseDartFile(String path,
     {bool suppressErrors = false,
     bool parseFunctionBodies = true,