class_docstr: Helper utils for Workflow Archiver tool.
  This class lists out all the methods such as validations for workflow archiving.
code: def make_dir(d):
      if not os.path.isdir(d):
          os.makedirs(d)
  
imports: import logging
  import os
  import re
  import zipfile
  import shutil
  import tempfile
  from .workflow_archiver_error import WorkflowArchiverError
  from .manifest_components.manifest import Manifest
  from .manifest_components.workflow import Workflow
label_desc: Use image node_id 6 for calling the WorkflowExportUtils obj's underlying member method code with example usage: obj.make_dir(d) without return types