original_string: public function get_present_plugins($type) {
          $this->load_present_plugins();
          if (isset($this->presentplugins[$type])) {
              return $this->presentplugins[$type];
          }
          return null;
      }
code: public function get_present_plugins($type) {
          $this->load_present_plugins();
          if (isset($this->presentplugins[$type])) {
              return $this->presentplugins[$type];
          }
          return null;
      }
code_tokens: public function get_present_plugins ( $ type ) { $ this -> load_present_plugins ( ) ; if ( isset ( $ this -> presentplugins [ $ type ] ) ) { return $ this -> presentplugins [ $ type ] ; } return null ; }
docstring: Get list of present plugins of given type.
  
  @param string $type
  @return array|null  list of presnet plugins $name=>$diskversion, null if unknown
docstring_tokens: Get list of present plugins of given type .