CommandHeader.java

/*
 * (C) 2007-2012 Alibaba Group Holding Limited.
 * 
 * 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 com.taobao.gecko.core.command;

/**
 * �����callBack�е�������Ϣ�����ڽ�ʡ�ڴ濼�ǣ���ò�Ҫ���Э����
 * 
 * @author dennis
 * 
 */
public interface CommandHeader extends Command {
    /**
     * ���������opaque
     * 
     * @return
     */
    public Integer getOpaque();

}