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

module Members
  class DestroyService < Members::BaseService
    include Gitlab::ExclusiveLeaseHelpers

    def execute(
      member,
      skip_authorization: false,
      skip_subresources: false,
      unassign_issuables: 
    
    def enqueue_unassign_issuables(member)
      source_type = member.is_a?(GroupMember) ? 'Group' : 'Project'
      current_user_id = current_user.id

      member.run_after_commit_or_now do
        MembersDestroyer::UnassignIssuablesWorker.perform_async(
          member.user_id,
          member.source_id,
          source_type,
          current_user_id
        )
      end
    end