public @NonNull CommandRegistrationHandler<C> commandRegistrationHandler() {
        return this.commandRegistrationHandler;
    }
Returns the command registration handler.
<p>
The command registration handler is able to intercept newly created/deleted commands, in order to propagate
these changes to the native command handler of the platform.
<p>
In platforms without a native command concept, this is likely to return
{@link CommandRegistrationHandler#nullCommandRegistrationHandler()}.

@return the command registration handler
cloud-core/src/main/java/org/incendo/cloud/CommandManager.java