code: def parse_document_content(self):
      if self.check_token(
          DirectiveToken,
          DocumentStartToken,
          DocumentEndToken,
          StreamEndToken,
      ):
          event = self.process_empty_scalar(
              self.peek_token().start_mark
          )
          self.state = self.states.pop()
          return event
      else:
          return self.parse_block_node()
  
imports: from .error import MarkedYAMLError
  from .tokens import *
  from .events import *
  from .scanner import *
label_desc: Use image node_id 10 for calling the Parser obj's underlying member method code with example usage: obj.parse_document_content() and returns: event, self