def message_for(corrections)
      return "" if corrections.empty?

      output = "\n\n    Did you mean? ".dup
      output << corrections.join("\n                  ")
      output << "\n "
    end
def message_for(corrections)
      return "" if corrections.empty?

      output = "\n\n    Did you mean? ".dup
      output << corrections.join("\n                  ")
      output << "\n "
    end
Returns a human readable string that contains +corrections+. This
 formatter is designed to be less verbose to not take too much screen
 space while being helpful enough to the user.

 @example

   formatter = DidYouMean::PlainFormatter.new

   puts formatter.message_for(["methods", "method"])


       Did you mean? methods
                     method

   # => nil