@Override
	public void execute(final String commandString, final Session context) throws IOException {
		final String args = this.getArgPredicate(commandString);
		if ("".equals(args)) {
			context.sendResponse(this.getCommandMessage(context.getServer()));
			return;
		}
		try {
			context.sendResponse(context.getServer().getCommandHandler().getHelp(args).toOutputString());
		} catch (final CommandException e) {
			context.sendResponse("504 HELP topic \"" + args + "\" unknown.");
		}
	}
Provides a help topic system for people to interact with.
src/main/java/de/gessnerfl/fakesmtp/smtp/command/HelpCommand.java