code: def fontInfoWOFFMetadataExtensionsValidator(value):
      """
      Version 3+.
      """
      if not isinstance(value, list):
          return False
      if not value:
          return False
      for extension in value:
          if not fontInfoWOFFMetadataExtensionValidator(extension):
              return False
      return True
  
imports: import calendar
  from io import open
  import fs.base
  import fs.osfs
  from collections.abc import Mapping
  from fontTools.ufoLib.utils import numberTypes
label_desc: Use image node_id 29 for calling a global function with example usage: fontInfoWOFFMetadataExtensionsValidator(value) and returns: True, False, False, False