code: public function load($key, $loadType = 'require_once')
      {
          if (isset($this->modules[$key])) {
              $path = $this->modulesPath . $this->modules[$key];
              $this->processLoad($path, $loadType);
          }
      }
docs: @brief load from $this->module array by key
  
  @param string $key key name
  @param string $loadType switch of
  - require_once
  - require
  - include_once
  - include
  @version 1.3