class RuboCop::Cop::Style::Attr

def on_send(node)
  return unless node.command?(:attr) && node.arguments?
  # check only for method definitions in class/module body
  return if allowed_context?(node)
  message = message(node)
  add_offense(node.loc.selector, message: message) do |corrector|
    autocorrect(corrector, node)
  end
end