guava/src/com/google/common/reflect/Types.java
@VisibleForTesting
  static WildcardType supertypeOf(Type lowerBound) {
    return new WildcardTypeImpl(new Type[] {lowerBound}, new Type[] {Object.class});
  }
@VisibleForTesting
  static WildcardType supertypeOf(Type lowerBound) {
    return new WildcardTypeImpl(new Type[] {lowerBound}, new Type[] {Object.class});
  }
@ VisibleForTesting static WildcardType supertypeOf ( Type lowerBound ) { return new WildcardTypeImpl ( new Type [ ] { lowerBound } , new Type [ ] { Object . class } ) ; }
Returns a new {@link WildcardType} with {@code lowerBound}.
Returns a new {