Drest\Mapping\Driver\AnnotationDriver::getAllClassNames PHP Method

    public function getAllClassNames()
    {
        if (empty($this->classNames)) {
            if (empty($this->paths)) {
                throw DrestException::pathToConfigFilesRequired();
            }
            $classes = [];
            $included = [];
            foreach ($this->paths as $path) {
                $iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path, \FilesystemIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY);
                foreach ($iterator as $file) {
                    /* @var \SplFileInfo $file */
                    if (!in_array($file->getExtension(), $this->extensions)) {
                        continue;
                    }
                    $path = $file->getRealPath();
                    if (!empty($path)) {
                        require_once $path;
                    }
                    // Register the files we've included here
                    $included[] = $path;
                }
            }
            foreach (get_declared_classes() as $className) {
                $reflClass = new \ReflectionClass($className);
                $sourceFile = $reflClass->getFileName();
                if (in_array($sourceFile, $included) && $this->isDrestResource($className)) {
                    $classes[] = $className;
                }
            }
            $this->classNames = $classes;
        }
        return $this->classNames;
    }