Method doExecute

/**
 * Internal function to execute the command.
 *
 * @param   InputInterface   $input   The input to inject into the command.
 * @param   OutputInterface  $output  The output to inject into the command.
 *
 * @return  integer  The command exit code
 *
 * @since   4.0.0
 */
protected function doExecute(InputInterface $input, OutputInterface $output) : int
{
    // Initialize the time value.
    $this->time = microtime(true);
    $this->configureIO($input, $output);
    $this->ioStyle->writeln(['<info>Finder Indexer</>', '<info>==========================</>', '']);
    if ($this->cliInput->getOption('minproctime')) {
        $this->minimumBatchProcessingTime = $this->cliInput->getOption('minproctime');
    }
    if ($this->cliInput->getOption('pause')) {
        $this->pause = $this->cliInput->getOption('pause');
    }
    if ($this->cliInput->getOption('divisor')) {
        $this->divisor = $this->cliInput->getOption('divisor');
    }
    if ($this->cliInput->getArgument('purge')) {
        // Taxonomy ids will change following a purge/index, so save filter information first.
        $this->getFilters();
        // Purge the index.
        $this->purge();
        // Run the indexer.
        $this->index();
        // Restore the filters again.
        $this->putFilters();
    } else {
        $this->index();
    }
    $this->ioStyle->newLine(1);
    // Total reporting.
    $this->ioStyle->writeln(['<info>' . Text::sprintf('FINDER_CLI_PROCESS_COMPLETE', round(microtime(true) - $this->time, 3)) . '</>', '<info>' . Text::sprintf('FINDER_CLI_PEAK_MEMORY_USAGE', number_format(memory_get_peak_usage(true))) . '</>']);
    $this->ioStyle->newLine(1);
    return Command::SUCCESS;
}