Check in codegen test expectations.

test/codegen/expect/language/internal_library_test_01_multi.js

Index: test/codegen/expect/language/internal_library_test_01_multi.js
diff --git a/test/codegen/expect/language/internal_library_test_01_multi.js b/test/codegen/expect/language/internal_library_test_01_multi.js
new file mode 100644
index 0000000000000000000000000000000000000000..d84e3f3c4b8bbe7a9cfb0902f68346367120f82c
--- /dev/null
+++ b/test/codegen/expect/language/internal_library_test_01_multi.js
@@ -0,0 +1,16 @@
+dart_library.library('language/internal_library_test_01_multi', null, /* Imports */[
+  'dart_sdk'
+], function load__internal_library_test_01_multi(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const internal_library_test_01_multi = Object.create(null);
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  internal_library_test_01_multi.main = function() {
+    0;
+  };
+  dart.fn(internal_library_test_01_multi.main, VoidTovoid());
+  // Exports:
+  exports.internal_library_test_01_multi = internal_library_test_01_multi;
+});