code: function loadHTML(href) {
      var absPath = hrefToAbsolutePath(href);
      loadHTMLFile.call(global, absPath, href);
    }
docs: Load a HTML file, which absolute path or path relative to <%search-path%>.
  Unlike the native load() method of d8, variables declared in |file_path|
  will not be hoisted to the caller environment. For example:
  
  a.html:
  <script>
  var x = 1;
  </script>
  
  test.js:
  loadHTML("a.html");
  print(x);  // <- ReferenceError is thrown because x is not defined.
  
  @param {string} file_path path to the HTML file to be loaded.