/**
  * Generate a list of files
  *
  * @param string $openApiSpec Location of the specification
  * @param string $namespace   Namespace of the library
  * @param string $directory   Path for the root directory of the generated files
  *
  * @return File[]
  */
 public function generate($openApiSpec, $namespace, $directory)
 {
     /** @var OpenApi $openApi */
     $context = $this->createContext($openApiSpec, 'Client', $namespace, $directory);
     $files = [];
     $files = array_merge($files, $this->modelGenerator->generate($context->getRootReference(), 'Client', $context));
     $files = array_merge($files, $this->normalizerGenerator->generate($context->getRootReference(), 'Client', $context));
     $clients = $this->clientGenerator->generate($context->getRootReference(), $namespace, $context);
     foreach ($clients as $node) {
         $files[] = new File($directory . DIRECTORY_SEPARATOR . 'Resource' . DIRECTORY_SEPARATOR . $node->stmts[2]->name . '.php', $node, '');
     }
     return $files;
 }