def password(message = 'Password: ', mask = '*')
      pass = ask(message) { |q| q.echo = mask }
      pass = password message, mask if pass.nil? || pass.empty?
      pass
    end
def password(message = 'Password: ', mask = '*')
      pass = ask(message) { |q| q.echo = mask }
      pass = password message, mask if pass.nil? || pass.empty?
      pass
    end
Ask the user for a password. Specify a custom
 _message_ other than 'Password: ' or override the
 default _mask_ of '*'.