src/Application.php
public function boot()
    {
        if ($this->booted) {
            return;
        }

        $this->container = $this->initializeContainer();
        $this->kernel    = $this->container->get('http_kernel');

        $this->booted = true;
    }
public function boot()
    {
        if ($this->booted) {
            return;
        }

        $this->container = $this->initializeContainer();
        $this->kernel    = $this->container->get('http_kernel');

        $this->booted = true;
    }
Boots the Application.