code: protected function getConfig()
      {
          if ($this->config === null) {
              if (file_exists($this->filename)) {
                  $this->filename = realpath($this->filename);
                  $this->config = new Config(include $this->filename, true);
              } else {
                  $this->filename = getcwd() . $this->filename;
                  $this->config = new Config([], true);
              }
          }
          return $this->config;
      }
docs: Get the Configure config
  @return Config