original_string: public function get_regions() {
          if (is_null($this->defaultregion)) {
              $this->page->initialise_theme_and_output();
          }
          return array_keys($this->regions);
      }
code: public function get_regions() {
          if (is_null($this->defaultregion)) {
              $this->page->initialise_theme_and_output();
          }
          return array_keys($this->regions);
      }
code_tokens: public function get_regions ( ) { if ( is_null ( $ this -> defaultregion ) ) { $ this -> page -> initialise_theme_and_output ( ) ; } return array_keys ( $ this -> regions ) ; }
docstring: Get an array of all region names on this page where a block may appear
  
  @return array the internal names of the regions on this page where block may appear.
docstring_tokens: Get an array of all region names on this page where a block may appear