@Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        @SuppressWarnings("unchecked")
        TtlVertxHandler<E> that = (TtlVertxHandler<E>) o;

        return handler.equals(that.handler);
    }
unwrap to original/unwrapped {@link Handler}.

@see com.alibaba.ttl.TtlUnwrap#unwrap(Object)
ttl-integrations/vertx4-ttl-integration/src/main/java/com/alibaba/ttl/integration/vertx4/TtlVertxHandler.java