001/* 002 * Copyright (C) 2008 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package com.google.common.collect.testing.features; 018 019import com.google.common.annotations.GwtCompatible; 020import java.util.Set; 021 022/** 023 * Base class for enumerating the features of an interface to be tested. 024 * 025 * @param <T> The interface whose features are to be enumerated. 026 * @author George van den Driessche 027 */ 028@GwtCompatible 029public interface Feature<T> { 030 /** Returns the set of features that are implied by this feature. */ 031 Set<Feature<? super T>> getImpliedFeatures(); 032}