protected function execute(InputInterface $input, OutputInterface $output)
    {
        $this->keeper->set(Keeper::LAST_UPDATE_KEY, new \DateTime());
        $output->writeln('Reset last update date of the project is complete.');
    }
protected function execute(InputInterface $input, OutputInterface $output)
    {
        $this->keeper->set(Keeper::LAST_UPDATE_KEY, new \DateTime());
        $output->writeln('Reset last update date of the project is complete.');
    }
@param InputInterface $input
@param OutputInterface $output

@return int|null