class RuboCop::Cop::Style::DefWithParentheses

def on_method_def(node, _method_name, args, _body)
  start_line = node.loc.keyword.line
  end_line = node.loc.end.line
  return if start_line == end_line
  add_offense(args, :begin) if args.children == [] && args.loc.begin
end