public void printUsage(PrintWriter writer, boolean showHidden) {
        if (writer instanceof IndentedPrintWriter) {
            printUsageInternal((IndentedPrintWriter) writer, showHidden);
        } else {
            printUsageInternal(new IndentedPrintWriter(writer), showHidden);
        }
    }
public void printUsage ( PrintWriter writer , boolean showHidden ) { if ( writer instanceof IndentedPrintWriter ) { printUsageInternal ( ( IndentedPrintWriter ) writer , showHidden ) ; } else { printUsageInternal ( new IndentedPrintWriter ( writer ) , showHidden ) ; } }
Print the option usage list. Essentially printed as a list of options
with the description indented where it overflows the available line
width.

@param writer The output printer.
@param showHidden Whether to show hidden options.