class RuboCop::Cop::RSpec::MultipleDescribes

def on_top_level_group(node)
  top_level_example_groups =
    top_level_groups.select { |group| example_group?(group) }
  return if top_level_example_groups.one?
  return unless top_level_example_groups.first.equal?(node)
  add_offense(node.send_node)
end