code: def __init__(
      self,
      start_mark=None,
      end_mark=None,
      explicit=None,
      version=None,
      tags=None,
  ):
      self.start_mark = start_mark
      self.end_mark = end_mark
      self.explicit = explicit
      self.version = version
      self.tags = tags
  
label_desc: Use image node_id 1 to create a new DocumentStartEvent object from inherited base classes: Event with example: obj = DocumentStartEvent(start_mark, end_mark, explicit, version, tags)