@SuppressWarnings("unchecked")
    @Override
    public <T extends Handler> T replace(Class<T> oldHandlerType, String newName, Handler newHandler) {
        return (T) replace(getContextOrDie(oldHandlerType), newName, newHandler);
    }
Most of the code references the pipeline design of
<a href="https://github.com/netty/netty">Netty</a>.

@author jiachun.fjc
jraft-rheakv/rheakv-core/src/main/java/com/alipay/sofa/jraft/rhea/util/pipeline/DefaultPipeline.java