original_string: protected function get_extra_modules_code() {
          if (empty($this->extramodules)) {
              return '';
          }
          return html_writer::script(js_writer::function_call('M.yui.add_module', array($this->extramodules)));
      }
code: protected function get_extra_modules_code() {
          if (empty($this->extramodules)) {
              return '';
          }
          return html_writer::script(js_writer::function_call('M.yui.add_module', array($this->extramodules)));
      }
code_tokens: protected function get_extra_modules_code ( ) { if ( empty ( $ this -> extramodules ) ) { return '' ; } return html_writer :: script ( js_writer :: function_call ( 'M.yui.add_module' , array ( $ this -> extramodules ) ) ) ; }
docstring: Adds extra modules specified after printing of page header.
  
  @return string
docstring_tokens: Adds extra modules specified after printing of page header .