code: def test_return_multiple_for_dir(dvc):
      o = Output(Stage(dvc), "path")
      o.hash_info = HashInfo("md5", "12345678.dir")
      o.meta = Meta(nfiles=2)
      assert o.get_files_number() == 2
  
file_path: dvc/tests/unit/output/test_local.py
imports: import os
  from dvc.output import Output
  from dvc.stage import Stage
  from dvc_data.hashfile.hash_info import HashInfo
  from dvc_data.hashfile.meta import Meta
label_desc: Use image node_id 6 for calling a global function with example usage: test_return_multiple_for_dir(dvc) without return types