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: exists.rb
    path of file: ./repos/gitlabhq/lib/gitlab/ci/build/rules/rule/clause
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Gitlab
  module Ci
    module Build
      class Rules::Rule::Clause::Ex
    
        def worktree_paths(context)
          return [] unless context.project

          if @top_level_only
            context.top_level_worktree_paths
          else
            context.all_worktree_paths
          end