core-bundle/src/Command/AutomatorCommand.php
private function getTaskFromInput(InputInterface $input, OutputInterface $output): string
    {
        $commands = $this->getCommands();
        $task = $input->getArgument('task');

        if (null !== $task) {
            if (!\in_array($task, $commands, true)) {
                throw new \InvalidArgumentException(sprintf('Invalid task "%s"', $task)); // no full stop here
            }

            return $task;
        }

        $question = new ChoiceQuestion('Please select a task:', $commands);
        $question->setMaxAttempts(1);

        /** @var QuestionHelper $helper */
        $helper = $this->getHelper('question');

        return $helper->ask($input, $output, $question);
    }
private function getTaskFromInput(InputInterface $input, OutputInterface $output): string
    {
        $commands = $this->getCommands();
        $task = $input->getArgument('task');

        if (null !== $task) {
            if (!\in_array($task, $commands, true)) {
                throw new \InvalidArgumentException(sprintf('Invalid task "%s"', $task)); // no full stop here
            }

            return $task;
        }

        $question = new ChoiceQuestion('Please select a task:', $commands);
        $question->setMaxAttempts(1);

        /** @var QuestionHelper $helper */
        $helper = $this->getHelper('question');

        return $helper->ask($input, $output, $question);
    }
Returns the task name from the argument list or via an interactive dialog.