code: def check_empty_document(self):
      if (
          not isinstance(self.event, DocumentStartEvent)
          or not self.events
      ):
          return False
      event = self.events[0]
      return (
          isinstance(event, ScalarEvent)
          and event.anchor is None
          and event.tag is None
          and event.implicit
          and event.value == ""
      )
  
imports: from .error import YAMLError
  from .events import *
label_desc: Use image node_id 34 for calling the Emitter obj's underlying member method code with example usage: obj.check_empty_document() and returns: unknown, False