class ActiveSupport::OrderedOptions

def method_missing(method, *args)
  if method.end_with?("=")
    self[method.name.chomp("=")] = args.first
  elsif method.end_with?("!")
    name_string = method.name.chomp("!")
    self[name_string].presence || raise(KeyError.new(":#{name_string} is blank"))
  else
    self[method.name]
  end
end