Webmozart\Console\Process\ProcessLauncher::setCheckInterval PHP Method

    public function setCheckInterval($checkInterval)
    {
        $this->checkInterval = $checkInterval;
    }

 protected function setUp()
 {
     $finder = new PhpExecutableFinder();
     $this->php = escapeshellcmd($finder->find());
     $this->launcher = new ProcessLauncher();
     // Speed up the tests
     $this->launcher->setCheckInterval(0.01);
 }