Make more use of generated classes in analysis server.

pkg/analysis_server/test/services/correction/assist_test.dart

Index: pkg/analysis_server/test/services/correction/assist_test.dart
diff --git a/pkg/analysis_server/test/services/correction/assist_test.dart b/pkg/analysis_server/test/services/correction/assist_test.dart
index 6b3e239bb4e30550df0facd8f3071545647d856d..d5fd995a7cedeb9eb358aceba38b40ed9ba5900b 100644
--- a/pkg/analysis_server/test/services/correction/assist_test.dart
+++ b/pkg/analysis_server/test/services/correction/assist_test.dart
@@ -43,7 +43,7 @@ class AssistProcessorTest extends AbstractSingleUnitTest {
     // apply to "file"
     List<FileEdit> fileEdits = change.fileEdits;
     expect(fileEdits, hasLength(1));
-    resultCode = Edit.applySequence(testCode, change.fileEdits[0].edits);
+    resultCode = applySequence(testCode, change.fileEdits[0].edits);
     // verify
     expect(resultCode, expected);
   }