class Faker::JapaneseMedia::KamenRider

def from_eras(*input_eras, field:)
  selected_eras = (ERAS & input_eras).then do |selected|
    selected.empty? ? eras : selected
  end.dup
  yield(selected_eras) if block_given?
  raise UnavailableInEra, "#{field} is unavailable in the selected eras." if selected_eras.empty?
  selected_eras.sample.then do |era|
    fetch("kamen_rider.#{era}.#{field}")
  end
end