module Logger::Period
  # <!--
  #   rdoc-file=lib/logger/period.rb
  #   - next_rotate_time(now, shift_age)
  # -->
  #
  def self?.next_rotate_time: (Time now, String shift_age) -> untyped

  # <!--
  #   rdoc-file=lib/logger/period.rb
  #   - previous_period_end(now, shift_age)
  # -->
  #
  def self?.previous_period_end: (Time now, String shift_age) -> untyped

  SiD: Integer
end