class RuboCop::Cop::Performance::Detect

def on_send(node)
  return if rails_safe_mode?
  detect_candidate?(node) do |receiver, second_method, args|
    return unless args.empty?
    return unless receiver
    receiver, _args, body = *receiver if receiver.block_type?
    return if accept_first_call?(receiver, body)
    register_offense(node, receiver, second_method)
  end
end