original_string: public function add_group($name, $config) {
          if (isset($this->groups[$name])) {
              throw new coding_exception("A YUI configuration group for '{$name}' already exists. To make changes to this group use YUI_config->update_group().");
          }
          $this->groups[$name] = $config;
      }
code: public function add_group($name, $config) {
          if (isset($this->groups[$name])) {
              throw new coding_exception("A YUI configuration group for '{$name}' already exists. To make changes to this group use YUI_config->update_group().");
          }
          $this->groups[$name] = $config;
      }
code_tokens: public function add_group ( $ name , $ config ) { if ( isset ( $ this -> groups [ $ name ] ) ) { throw new coding_exception ( "A YUI configuration group for '{$name}' already exists. To make changes to this group use YUI_config->update_group()." ) ; } $ this -> groups [ $ name ] = $ config ; }
docstring: Create a new group within the YUI_config system.
  
  @param String $name The name of the group. This must be unique and
  not previously used.
  @param Array $config The configuration for this group.
  @return void
docstring_tokens: Create a new group within the YUI_config system .