docs: protected static void applyCommandLine(ConfigArgP cap, ArgP argp) {
      // --config, --include-config, --help
      if(argp.has("--help")) {
        if(cap.hasNonOption("extended")) {
          System.out.println(cap.getExtendedUsage("tsd extended usage:"));
        } else {
          System.out.println(cap.getDefaultUsage("tsd usage:"));
        }     
        System.exit(0);
      }
      if(argp.has("--config")) {
        loadConfigSource(cap, argp.get("--config").trim());
      }
      if(argp.has("--include")) {
        String[] sources = argp.get("--include").split(",");
        for(String s: sources) {
          loadConfigSource(cap, s.trim());
        }
      }
    }