def for_option_parser
      [short, long, return_type, description].flatten.reject { |o| o.to_s.empty? }
    end
def for_option_parser
      [short, long, return_type, description].flatten.reject { |o| o.to_s.empty? }
    end
Public: Create a new Option

 config_key - the key in the config hash to which the value of this option
              will map
 info       - an array containing first the switches, then an optional
              return type (e.g. Array), then a description of the option

 Returns nothing
 Public: Fetch the array containing the info OptionParser is interested in

 Returns the array which OptionParser#on wants