* systems and high-level APIs that provide autoescaping.
 * One Google-authored templating system available for external use is <a
 * href="https://developers.google.com/closure/templates/">Closure Templates</a>.
 *
 * <p>HTML escaping is particularly tricky: For example, <a href="http://goo.gl/5TgZb">some

 * work during upgrades. However it is generally inadvisable for <i>libraries</i> (which get
 * included on users' CLASSPATHs, outside the library developers' control) to do so.
 *
 * @author Kevin Bourrillion
 */
@Retention(RetentionPolicy.CLASS)
@Target({
  ElementType.ANNOTATION_TYPE,
  ElementType.CONSTRUCTOR,
  ElementType.FIELD,
  ElementType.METHOD,

 *       annotations in Guava. Or you might prefer to omit Guava from your {@code AnnotatedPackages}
 *       list.
 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>
 *   <li>{@code NullPointerTester}, at least in the Android backport (where the type-use annotations
 *       {@code NullPointerTester} would need are not available) and in case of <a

 *       annotations in Guava. Or you might prefer to omit Guava from your {@code AnnotatedPackages}
 *       list.
 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>
 *   <li>{@code NullPointerTester}, at least in the Android backport (where the type-use annotations
 *       {@code NullPointerTester} would need are not available) and in case of <a

 *       annotations in Guava. Or you might prefer to omit Guava from your {@code AnnotatedPackages}
 *       list.
 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>
 *   <li>{@code NullPointerTester}, at least in the Android backport (where the type-use annotations
 *       {@code NullPointerTester} would need are not available) and in case of <a

 *       annotations in Guava. Or you might prefer to omit Guava from your {@code AnnotatedPackages}
 *       list.
 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>
 *   <li>{@code NullPointerTester}, at least in the Android backport (where the type-use annotations
 *       {@code NullPointerTester} would need are not available) and in case of <a

 *       annotations in Guava. Or you might prefer to omit Guava from your {@code AnnotatedPackages}
 *       list.
 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>
 *   <li>{@code NullPointerTester}, at least in the Android backport (where the type-use annotations
 *       {@code NullPointerTester} would need are not available) and in case of <a

 * work during upgrades. However it is generally inadvisable for <i>libraries</i> (which get
 * included on users' CLASSPATHs, outside the library developers' control) to do so.
 *
 * @author Kevin Bourrillion
 */
@Retention(RetentionPolicy.CLASS)
@Target({
  ElementType.ANNOTATION_TYPE,
  ElementType.CONSTRUCTOR,
  ElementType.FIELD,
  ElementType.METHOD,

 * `-android` "flavors.")
 *
 * (We could consider releasing a listenablefuture:1.0.1 someday. But we would want to look into how
 * that affects users, especially users of the Android Gradle Plugin, since the plugin developers
 * put in a special hack for us: https://issuetracker.google.com/issues/131431257)
 */
@DoNotMock("Use the methods in Futures (like immediateFuture) or SettableFuture")
@ElementTypesAreNonnullByDefault

 *       annotations in Guava. Or you might prefer to omit Guava from your {@code AnnotatedPackages}
 *       list.
 *   <li><a href="https://developers.google.com/j2objc">J2ObjC</a>
 *   <li>{@code NullPointerTester}, at least in the Android backport (where the type-use annotations
 *       {@code NullPointerTester} would need are not available) and in case of <a