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: create_approval_event_worker.rb
    path of file: ./repos/gitlabhq/app/workers/merge_requests
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module MergeRequests
  class CreateApprovalEventWo
    
    def handle_event(event)
      current_user_id = event.data[:current_user_id]
      merge_request_id = event.data[:merge_request_id]
      current_user = User.find_by_id(current_user_id)

      unless current_user
        logger.info(structured_payload(message: 'Current user not found.', current_user_id: current_user_id))
        return
      end