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

module MergeRequests
  class MergeOrchestrationService < ::BaseService
    def execute(merge
    
    def execute(merge_request)
      return unless can_merge?(merge_request)

      merge_request.update(merge_error: nil)

      if can_merge_automatically?(merge_request)
        auto_merge_service.execute(merge_request)
      else
        merge_request.merge_async(current_user.id, params)
      end