Issue 13783. Add file from missing import.

pkg/analysis_server/lib/src/services/correction/fix.dart

Index: pkg/analysis_server/lib/src/services/correction/fix.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/fix.dart b/pkg/analysis_server/lib/src/services/correction/fix.dart
index 8b20c9a35b3da569214b9509652a01071396e171..56bab028b184478f1cc598507bc393929ca67ff9 100644
--- a/pkg/analysis_server/lib/src/services/correction/fix.dart
+++ b/pkg/analysis_server/lib/src/services/correction/fix.dart
@@ -5,8 +5,8 @@
 library services.correction.fix;
 
 import 'package:analysis_server/src/protocol.dart' show SourceChange;
-import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ -48,38 +48,39 @@ class Fix {
 class FixKind {
   static const ADD_PACKAGE_DEPENDENCY =
       const FixKind('ADD_PACKAGE_DEPENDENCY', 50, "Add dependency on package '{0}'");
-  static const ADD_SUPER_CONSTRUCTOR_INVOCATION =
-      const FixKind(
-          'ADD_SUPER_CONSTRUCTOR_INVOCATION',
-          50,
-          "Add super constructor {0} invocation");
+  static const ADD_SUPER_CONSTRUCTOR_INVOCATION = const FixKind(
+      'ADD_SUPER_CONSTRUCTOR_INVOCATION',
+      50,
+      "Add super constructor {0} invocation");
   static const CHANGE_TO = const FixKind('CHANGE_TO', 51, "Change to '{0}'");
-  static const CHANGE_TO_STATIC_ACCESS =
-      const FixKind(
-          'CHANGE_TO_STATIC_ACCESS',
-          50,
-          "Change access to static using '{0}'");
+  static const CHANGE_TO_STATIC_ACCESS = const FixKind(
+      'CHANGE_TO_STATIC_ACCESS',
+      50,
+      "Change access to static using '{0}'");
   static const CREATE_CLASS =
       const FixKind('CREATE_CLASS', 50, "Create class '{0}'");
   static const CREATE_CONSTRUCTOR =
       const FixKind('CREATE_CONSTRUCTOR', 50, "Create constructor '{0}'");
-  static const CREATE_CONSTRUCTOR_SUPER =
-      const FixKind('CREATE_CONSTRUCTOR_SUPER', 50, "Create constructor to call {0}");
+  static const CREATE_CONSTRUCTOR_SUPER = const FixKind(
+      'CREATE_CONSTRUCTOR_SUPER',
+      50,
+      "Create constructor to call {0}");
+  static const CREATE_FILE =
+      const FixKind('CREATE_FILE', 50, "Create file '{0}'");
   static const CREATE_FUNCTION =
       const FixKind('CREATE_FUNCTION', 49, "Create function '{0}'");
   static const CREATE_METHOD =
       const FixKind('CREATE_METHOD', 50, "Create method '{0}'");
-  static const CREATE_MISSING_OVERRIDES =
-      const FixKind('CREATE_MISSING_OVERRIDES', 50, "Create {0} missing override(s)");
+  static const CREATE_MISSING_OVERRIDES = const FixKind(
+      'CREATE_MISSING_OVERRIDES',
+      50,
+      "Create {0} missing override(s)");
   static const CREATE_NO_SUCH_METHOD =
       const FixKind('CREATE_NO_SUCH_METHOD', 49, "Create 'noSuchMethod' method");
-  static const CREATE_PART =
-      const FixKind('CREATE_PART', 50, "Create part '{0}'");
-  static const IMPORT_LIBRARY_PREFIX =
-      const FixKind(
-          'IMPORT_LIBRARY_PREFIX',
-          51,
-          "Use imported library '{0}' with prefix '{1}'");
+  static const IMPORT_LIBRARY_PREFIX = const FixKind(
+      'IMPORT_LIBRARY_PREFIX',
+      51,
+      "Use imported library '{0}' with prefix '{1}'");
   static const IMPORT_LIBRARY_PROJECT =
       const FixKind('IMPORT_LIBRARY_PROJECT', 51, "Import library '{0}'");
   static const IMPORT_LIBRARY_SDK =
@@ -90,32 +91,31 @@ class FixKind {
       const FixKind('INSERT_SEMICOLON', 50, "Insert ';'");
   static const MAKE_CLASS_ABSTRACT =
       const FixKind('MAKE_CLASS_ABSTRACT', 50, "Make class '{0}' abstract");
-  static const REMOVE_PARAMETERS_IN_GETTER_DECLARATION =
-      const FixKind(
-          'REMOVE_PARAMETERS_IN_GETTER_DECLARATION',
-          50,
-          "Remove parameters in getter declaration");
-  static const REMOVE_PARENTHESIS_IN_GETTER_INVOCATION =
-      const FixKind(
-          'REMOVE_PARENTHESIS_IN_GETTER_INVOCATION',
-          50,
-          "Remove parentheses in getter invocation");
+  static const REMOVE_PARAMETERS_IN_GETTER_DECLARATION = const FixKind(
+      'REMOVE_PARAMETERS_IN_GETTER_DECLARATION',
+      50,
+      "Remove parameters in getter declaration");
+  static const REMOVE_PARENTHESIS_IN_GETTER_INVOCATION = const FixKind(
+      'REMOVE_PARENTHESIS_IN_GETTER_INVOCATION',
+      50,
+      "Remove parentheses in getter invocation");
   static const REMOVE_UNNECASSARY_CAST =
       const FixKind('REMOVE_UNNECASSARY_CAST', 50, "Remove unnecessary cast");
   static const REMOVE_UNUSED_IMPORT =
       const FixKind('REMOVE_UNUSED_IMPORT', 50, "Remove unused import");
-  static const REPLACE_BOOLEAN_WITH_BOOL =
-      const FixKind('REPLACE_BOOLEAN_WITH_BOOL', 50, "Replace 'boolean' with 'bool'");
+  static const REPLACE_BOOLEAN_WITH_BOOL = const FixKind(
+      'REPLACE_BOOLEAN_WITH_BOOL',
+      50,
+      "Replace 'boolean' with 'bool'");
   static const REPLACE_IMPORT_URI =
       const FixKind('REPLACE_IMPORT_URI', 50, "Replace with '{0}'");
   static const REPLACE_VAR_WITH_DYNAMIC =
       const FixKind('REPLACE_VAR_WITH_DYNAMIC', 50, "Replace 'var' with 'dynamic'");
   static const USE_CONST = const FixKind('USE_CONST', 50, "Change to constant");
-  static const USE_EFFECTIVE_INTEGER_DIVISION =
-      const FixKind(
-          'USE_EFFECTIVE_INTEGER_DIVISION',
-          50,
-          "Use effective integer division ~/");
+  static const USE_EFFECTIVE_INTEGER_DIVISION = const FixKind(
+      'USE_EFFECTIVE_INTEGER_DIVISION',
+      50,
+      "Use effective integer division ~/");
   static const USE_EQ_EQ_NULL =
       const FixKind('USE_EQ_EQ_NULL', 50, "Use == null instead of 'is Null'");
   static const USE_NOT_EQ_NULL =