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/*
 * Copyright 2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.social.google.api;

import static org.springframework.util.StringUtils.hasText;

/**
 * Abstract superclass for API-specific entities
 * @author Gabriel Axel
 */
public abstract class ApiEntity {

	private String id;
	
	private String etag;

	protected ApiEntity() {
	}
	
	protected ApiEntity(String id) {
		this.id = hasText(id) ? id : null;
	}

	public String getId() {
		return id;
	}
	
	public String getEtag() {
		return etag;
	}
	
}