class Holidays::Finder::Context::Search

def custom_holiday(year, month, h)
  @custom_method_processor.call(
    #FIXME This seems like a bug, we seem to expect the day in here in the au defs?
    build_custom_method_input(year, month, h[:mday], h[:regions]),
    h[:function], h[:function_arguments], h[:function_modifier],
  )
end