Can not find class io.netty.util.collection.LongObjectHashMap in 4.1.8.final

In the version 4.1.8.final

module codec-redis

class FixedRedisMessagePool

already import the follow class

import io.netty.util.collection.LongObjectHashMap;
import io.netty.util.collection.LongObjectMap;

it Prompt error message is as follows ：Unused import statemen

but I can not find the class in the whole project.

In the 4.1.6 final and 4.1.7 final version

I find these classes in the io.netty.util.collection package

In the 4.1.8 final version

the whole project is changed. I find the io.netty.util package is in common module，

But I can not find in io.netty.util.collection package ，in the whole project , it also didn’t find it .

I thought it may forget to copy the io.netty.util.collection package in the module common .

only my thougnt, help me @sprsquish @adamv @mheath @ngocdaothanh , thank you

In addition， I am from China, bad English , Please wait

[normanmaurer]

@zhisheng17 its generated during build. run mvn clean compile in the common module.

[Quantriple]

朋友 mvn clean我使用了 还是没用 求教