original_string: private function getBoundary() {
  
  		if(null === $this -> boundary) {
  			$this -> boundary = md5(date('r', time()));
  		}
  
  		return $this -> boundary;
  	}
code: private function getBoundary() {
  
  		if(null === $this -> boundary) {
  			$this -> boundary = md5(date('r', time()));
  		}
  
  		return $this -> boundary;
  	}
code_tokens: private function getBoundary ( ) { if ( null === $ this -> boundary ) { $ this -> boundary = md5 ( date ( 'r' , time ( ) ) ) ; } return $ this -> boundary ; }
docstring: Generates if needed and returns the boundary
  @return string
docstring_tokens: Generates if needed and returns the boundary