Method asElement

common/src/main/java/com/google/auto/common/MoreTypes.java:543–545

An alternate implementation of Types#asElement that does not require a Types instance with the notable difference that it will throw IllegalArgumentException instead of returning null if the TypeMirror can not be converted to an Element. @throws NullPointerEx

(TypeMirror typeMirror)

   *     Element}
   */
  public static Element asElement(TypeMirror typeMirror) {
    return typeMirror.accept(AsElementVisitor.INSTANCE, null);
  }

  private static final class AsElementVisitor extends SimpleTypeVisitor8<Element, Void> {
    private static final AsElementVisitor INSTANCE = new AsElementVisitor();