@Override
    public short value() {
        return this.value;
    }
Command code for rpc remoting command.
@author jiangping
@version $Id: RpcCommandCode.java, v 0.1 2015-9-21 PM5:05:59 tao Exp $
src/main/java/com/alipay/remoting/rpc/protocol/RpcCommandCode.java