Check in codegen test expectations.

test/codegen/expect/language/prefix_identifier_reference_test_none_multi.js

Index: test/codegen/expect/language/prefix_identifier_reference_test_none_multi.js
diff --git a/test/codegen/expect/language/prefix_identifier_reference_test_none_multi.js b/test/codegen/expect/language/prefix_identifier_reference_test_none_multi.js
new file mode 100644
index 0000000000000000000000000000000000000000..94547de8a24d402d89a4fd37f8d3a10d8f7f53b2
--- /dev/null
+++ b/test/codegen/expect/language/prefix_identifier_reference_test_none_multi.js
@@ -0,0 +1,21 @@
+dart_library.library('language/prefix_identifier_reference_test_none_multi', null, /* Imports */[
+  'dart_sdk'
+], function load__prefix_identifier_reference_test_none_multi(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const prefix_identifier_reference_test_none_multi = Object.create(null);
+  const empty_library = Object.create(null);
+  let dynamicTovoid = () => (dynamicTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  prefix_identifier_reference_test_none_multi.f = function(x) {
+  };
+  dart.fn(prefix_identifier_reference_test_none_multi.f, dynamicTovoid());
+  prefix_identifier_reference_test_none_multi.main = function() {
+  };
+  dart.fn(prefix_identifier_reference_test_none_multi.main, VoidTodynamic());
+  // Exports:
+  exports.prefix_identifier_reference_test_none_multi = prefix_identifier_reference_test_none_multi;
+  exports.empty_library = empty_library;
+});