require 'fileutils'require 'find' module Docs  class FileStore < AbstractStore    private     def read_file(path)      File.read(path)    end     def create_file(path, value)      FileUtils.mkpath File.dirname(path)       if value.is_a? Tempfile        FileUtils.move(value, path)      else        File.write(path, value)      end    end     alias_method :update_file, :create_file     def delete_file(path)      if File.directory?(path)        FileUtils.rmtree(path, secure: true)      else        FileUtils.rm(path)      end    end     def file_exist?(path)      File.exist?(path)    end     def file_mtime(path)      File.mtime(path)    end     def file_size(path)      File.size(path)    end     def list_files(path)      Find.find path do |file|        next if file == path        Find.prune if File.basename(file)[0] == '.'        yield file        Find.prune unless File.exist?(file)      end    end  endend