original_string: public function upperWords($delimiters = " \t\r\n\f\v")
      {
          return static::of(
              mb_ucwords($this->contents, $delimiters, $this->encoding),
              $this->encoding
          );
      }
code: public function upperWords($delimiters = " \t\r\n\f\v")
      {
          return static::of(
              mb_ucwords($this->contents, $delimiters, $this->encoding),
              $this->encoding
          );
      }
code_tokens: public function upperWords ( $ delimiters = " \t\r\n\f\v" ) { return static :: of ( mb_ucwords ( $ this -> contents , $ delimiters , $ this -> encoding ) , $ this -> encoding ) ; }
docstring: Return the string with all the words in upper case.
  
  Delimiters are used to determine what is a word.
  
  @param string $delimiters
  
  @return Rope
docstring_tokens: Return the string with all the words in upper case .