original_string: protected function countGroupOpen(Array $tokens)
  	{
  		return array_reduce($tokens, function ($carry, $item) {
  			return $carry += $item instanceof Token\Group\Open;
  		}, 0);
  	}
code: protected function countGroupOpen(Array $tokens)
  	{
  		return array_reduce($tokens, function ($carry, $item) {
  			return $carry += $item instanceof Token\Group\Open;
  		}, 0);
  	}
code_tokens: protected function countGroupOpen ( Array $ tokens ) { return array_reduce ( $ tokens , function ( $ carry , $ item ) { return $ carry += $ item instanceof Token \ Group \ Open ; } , 0 ) ; }
docstring: Counts the number of group-open tokens
  
  @param  Jstewmc\Rtf\Token\Token  $tokens  the tokens to test
  @return  int
  @since  0.4.2
docstring_tokens: Counts the number of group - open tokens