public EventLoopGroup getEventLoopGroup() {
        // NOTE: Per default netty creates two threads per cpu core. However, we are not running a server but usually
        // are expecting only a request for a response, Netty also cleans up idle threads in the group, so we're
        // setting this to a low number as a test, if this proves to not cause issues, we'll leave it. If there are
        // issues, I hope this note helps track them down.
        return new NioEventLoopGroup(1);
    }
Event Loop Group to use.
Has to be in accordance with {@link #getChannel()}
otherwise a Runtime Exception will be produced by Netty
<p>
By Default Netty's {@link NioEventLoopGroup} is used.
Transports which have to use a different EventLoopGroup have to override {#getEventLoopGroup()}.
plc4j/spi/src/main/java/org/apache/plc4x/java/spi/connection/NettyChannelFactory.java