Integrate the EXTRACT_METHOD refactoring into Editor.

pkg/analysis_server/lib/src/generated_protocol.dart

Index: pkg/analysis_server/lib/src/generated_protocol.dart
diff --git a/pkg/analysis_server/lib/src/generated_protocol.dart b/pkg/analysis_server/lib/src/generated_protocol.dart
index 5a95aca604b204ccdc7c27e20104a9f0e191f3d6..ae83b1cecb9ef6719d31c5007034f3e3b6528592 100644
--- a/pkg/analysis_server/lib/src/generated_protocol.dart
+++ b/pkg/analysis_server/lib/src/generated_protocol.dart
@@ -9483,7 +9483,7 @@ class ExtractMethodOptions extends RefactoringOptions implements HasToJson {
    * parameter. It is an error if a REQUIRED or POSITIONAL parameter follows a
    * NAMED parameter.
    *
-   * - To change the order and/or update proposed paramerers, add parameters
+   * - To change the order and/or update proposed parameters, add parameters
    *   with the same identifiers as proposed.
    * - To add new parameters, omit their identifier.
    * - To remove some parameters, omit them in this list.