class RuboCop::Cop::Layout::FirstArgumentIndentation

def message(arg_node)
  return 'Bad indentation of the first argument.' unless arg_node
  send_node = arg_node.parent
  text = base_range(send_node, arg_node).source.strip
  base = if !text.include?("\n") && special_inner_call_indentation?(send_node)
           "`#{text}`"
         elsif comment_line?(text.lines.reverse_each.first)
           'the start of the previous line (not counting the comment)'
         else
           'the start of the previous line'
         end
  format(MSG, base: base)
end