Issue 19801. Fix for inlining referenced function with an expression body.

pkg/analysis_server/test/services/refactoring/inline_method_test.dart

Index: pkg/analysis_server/test/services/refactoring/inline_method_test.dart
diff --git a/pkg/analysis_server/test/services/refactoring/inline_method_test.dart b/pkg/analysis_server/test/services/refactoring/inline_method_test.dart
index c41a5455f53dacf476f7b60dc27c60b59b8be6f6..1236fb2aaa983dccbfde95d9608a66374f8e11bc 100644
--- a/pkg/analysis_server/test/services/refactoring/inline_method_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/inline_method_test.dart
@@ -999,6 +999,22 @@ main() {
 ''');
   }
 
+  test_reference_expressionBody() {
+    indexTestUnit(r'''
+String message() => 'Hello, World!';
+main() {
+  print(message);
+}
+''');
+    _createRefactoring('message()');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  print(() => 'Hello, World!');
+}
+''');
+  }
+
   test_singleExpression_oneUsage() {
     indexTestUnit(r'''
 test(a, b) {