You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: clean_up_unmatched_ips.rb
    path of file: ./repos/discourse/app/jobs/scheduled
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Jobs
  class CleanUpUnmatchedIPs < ::Jobs::Scheduled
    every 1.day

    def execute(args)
      # roll-up IP addresses first
      ScreenedIpAddress.roll_up

      last_match_threshold = SiteSetting.max_age_unmatched_ips.days.ago

      # remove old unmatched IP addresses
      ScreenedIpAddress
        .where(action_type: ScreenedIpAddress.ac
    
    def execute(args)
      # roll-up IP addresses first
      ScreenedIpAddress.roll_up

      last_match_threshold = SiteSetting.max_age_unmatched_ips.days.ago

      # remove old unmatched IP addresses
      ScreenedIpAddress
        .where(action_type: ScreenedIpAddress.actions[:block])
        .where(
          "last_match_at < ? OR (last_match_at IS NULL AND created_at < ?)",
          last_match_threshold,
          last_match_threshold,
        )
        .destroy_all
    end