class FriendPullHandler extends IMHandler<WFCMessage.Version> {
    @Override
    public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, ProtoConstants.RequestSourceType requestSourceType, WFCMessage.Version request, Qos1PublishHandler.IMCallback callback) {<FILL_FUNCTION_BODY>}
}

        List<FriendData> friendDatas = m_messagesStore.getFriendList(fromUser, clientID, request.getVersion());
        WFCMessage.GetFriendsResult.Builder builder = WFCMessage.GetFriendsResult.newBuilder();
        for (FriendData data : friendDatas
            ) {
            WFCMessage.Friend.Builder builder1 = WFCMessage.Friend.newBuilder().setState(data.getState()).setBlacked(data.getBlacked()).setUid(data.getFriendUid()).setUpdateDt(data.getTimestamp());
            if (!StringUtil.isNullOrEmpty(data.getAlias())) {
                builder1.setAlias(data.getAlias());
            }
            if (!StringUtil.isNullOrEmpty(data.getExtra())) {
                builder1.setExtra(data.getExtra());
            }
            builder.addEntry(builder1.build());
        }
        byte[] data = builder.build().toByteArray();
        ackPayload.ensureWritable(data.length).writeBytes(data);
        return ErrorCode.ERROR_CODE_SUCCESS;
    
<methods>public void <init>() ,public abstract cn.wildfirechat.common.ErrorCode action(ByteBuf, java.lang.String, java.lang.String, cn.wildfirechat.proto.ProtoConstants.RequestSourceType, cn.wildfirechat.proto.WFCMessage.Version, io.moquette.spi.impl.Qos1PublishHandler.IMCallback) ,public void afterAction(java.lang.String, java.lang.String, java.lang.String, io.moquette.spi.impl.Qos1PublishHandler.IMCallback) ,public void doHandler(java.lang.String, java.lang.String, java.lang.String, byte[], io.moquette.spi.impl.Qos1PublishHandler.IMCallback, cn.wildfirechat.proto.ProtoConstants.RequestSourceType) ,public static io.moquette.spi.impl.MessagesPublisher getPublisher() ,public static void init(io.moquette.spi.IMessagesStore, io.moquette.spi.ISessionsStore, io.moquette.spi.impl.MessagesPublisher, cn.wildfirechat.server.ThreadPoolExecutorWrapper, io.moquette.server.Server) ,public cn.wildfirechat.common.ErrorCode preAction(java.lang.String, java.lang.String, java.lang.String, io.moquette.spi.impl.Qos1PublishHandler.IMCallback, cn.wildfirechat.proto.ProtoConstants.RequestSourceType) <variables>protected static final Logger LOG,protected static java.lang.String actionName,private Class#RAW dataCls,private static win.liyufan.im.RateLimiter mLimitCounter,protected static io.moquette.server.Server mServer,private static cn.wildfirechat.server.ThreadPoolExecutorWrapper m_imBusinessExecutor,protected static io.moquette.spi.IMessagesStore m_messagesStore,protected static io.moquette.spi.ISessionsStore m_sessionsStore,private java.lang.reflect.Method parseDataMethod,protected static io.moquette.spi.impl.MessagesPublisher publisher