code: def pull_dvc_dep(dep, run_dir, project_dir, remote=None):
      _ensure_dvc_file(dep, run_dir, project_dir)
      return _pull_dep(dep, run_dir, remote)
  
imports: import json
  import logging
  import os
  import subprocess
  import yaml
  from guild import util
  from guild import var
label_desc: Use image node_id 30 for calling a global function with example usage: pull_dvc_dep(dep, run_dir, project_dir, remote) and returns: _pull_dep