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: github_pull_request.rb
    path of file: ./repos/openproject/modules/github_integration/app/models
    
    the code of the file until where you have to start completion: #-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2024 the OpenProject GmbH
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General 
    
  def self.find_by_github_identifiers(id: nil, url: nil, initialize: false)
    raise ArgumentError, "needs an id or an url" if id.nil? && url.blank?

    found = where(github_id: id).or(where(github_html_url: url)).take

    if found
      found
    elsif initialize
      new(github_id: id, github_html_url: url)
    end