class Selenium::WebDriver::Support::Select

def deselect_by_text(text)
  raise Error::UnsupportedOperationError, 'you may only deselect option of a multi-select' unless multiple?
  opts = find_by_text text
  return deselect_options(opts) unless opts.empty?
  raise Error::NoSuchElementError, "cannot locate element with text: #{text.inspect}"
end