Neos\FluidAdaptor\Package::boot PHP Method

    public function boot(Bootstrap $bootstrap)
    {
        $dispatcher = $bootstrap->getSignalSlotDispatcher();
        $context = $bootstrap->getContext();
        if (!$context->isProduction()) {
            $dispatcher->connect(Sequence::class, 'afterInvokeStep', function ($step) use($bootstrap, $dispatcher) {
                if ($step->getIdentifier() === 'neos.flow:systemfilemonitor') {
                    $templateFileMonitor = FileMonitor::createFileMonitorAtBoot('Fluid_TemplateFiles', $bootstrap);
                    $packageManager = $bootstrap->getEarlyInstance(PackageManagerInterface::class);
                    foreach ($packageManager->getActivePackages() as $packageKey => $package) {
                        if ($packageManager->isPackageFrozen($packageKey)) {
                            continue;
                        }
                        foreach (array('Templates', 'Partials', 'Layouts') as $path) {
                            $templatesPath = $package->getResourcesPath() . 'Private/' . $path;
                            if (is_dir($templatesPath)) {
                                $templateFileMonitor->monitorDirectory($templatesPath);
                            }
                        }
                    }
                    $templateFileMonitor->detectChanges();
                    $templateFileMonitor->shutdownObject();
                }
            });
        }
        // Use a closure to invoke the TemplateCompiler, since the object is not registered during compiletime
        $flushTemplates = function ($identifier, $changedFiles) use($bootstrap) {
            if ($identifier !== 'Fluid_TemplateFiles') {
                return;
            }
            if ($changedFiles === []) {
                return;
            }
            $templateCache = $bootstrap->getObjectManager()->get(CacheManager::class)->getCache('Fluid_TemplateCache');
            $templateCache->flush();
        };
        $dispatcher->connect(FileMonitor::class, 'filesHaveChanged', $flushTemplates);
    }