private void test(String js, FunctionInformationMap expected) {
   Compiler compiler = new Compiler();
   compiler.init(
       new JSSourceFile[] {JSSourceFile.fromCode("externs", "")},
       new JSSourceFile[] {JSSourceFile.fromCode("testcode", js)},
       new CompilerOptions());
   test(compiler, expected);
 }
 private void test(JSModule[] modules, FunctionInformationMap expected) {
   Compiler compiler = new Compiler();
   compiler.init(
       new JSSourceFile[] {JSSourceFile.fromCode("externs", "")}, modules, new CompilerOptions());
   test(compiler, expected);
 }