void printHelp(OutputStream out) {
        HelpFormatter formatter = new HelpFormatter();
        PrintWriter writer = new PrintWriter(out);
        formatter.printHelp(
                writer,
                formatter.getWidth(),
                "vespa-feed-client <options>",
                "Vespa feed client",
                optionsDefinition,
                formatter.getLeftPadding(),
                formatter.getDescPadding(),
                "");
        writer.flush();
    }
Parses command line arguments

@author bjorncs
vespa-feed-client-cli/src/main/java/ai/vespa/feed/client/impl/CliArguments.java