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
{
    $this->configureIO($input, $output);
    if ($eid = $this->cliInput->getOption('eid')) {
        $result = $this->processDiscover($eid);
        if ($result === -1) {
            $this->ioStyle->error($this->getNote($result, $eid));
            return Command::FAILURE;
        } else {
            $this->ioStyle->success($this->getNote($result, $eid));
            return Command::SUCCESS;
        }
    } else {
        $result = $this->processDiscover(-1);
        if ($result < 0) {
            $this->ioStyle->error($this->getNote($result, -1));
            return Command::FAILURE;
        } elseif ($result === 0) {
            $this->ioStyle->note($this->getNote($result, -1));
            return Command::SUCCESS;
        } else {
            $this->ioStyle->note($this->getNote($result, -1));
            return Command::SUCCESS;
        }
    }
}