code: def parse_flow_sequence_entry(self, first=False):
      if not self.check_token(FlowSequenceEndToken):
          if not first:
              if self.check_token(FlowEntryToken):
                  self.get_token()
              else:
                  token = self.peek_token()
                  raise ParserError(
                      "while parsing a flow sequence",
                      self.marks[-1],
                      "expected ',' or ']', but got %r" % token.id,
                      token.start_mark,
                  )
  
          if self.check_token(KeyToken):
              token = self.peek_token()
              event = MappingStartEvent(
                  None,
                  None,
                  True,
                  token.start_mark,
                  token.end_mark,
                  flow_style=True,
              )
              self.state = self.parse_flow_sequence_entry_mapping_key
              return event
          elif not self.check_token(FlowSequenceEndToken):
              self.states.append(self.parse_flow_sequence_entry)
              return self.parse_flow_node()
      token = self.get_token()
      event = SequenceEndEvent(token.start_mark, token.end_mark)
      self.state = self.states.pop()
      self.marks.pop()
      return event
  
imports: from .error import MarkedYAMLError
  from .tokens import *
  from .events import *
  from .scanner import *
label_desc: Use image node_id 23 for calling the Parser obj's underlying member method code with example usage: obj.parse_flow_sequence_entry(first) and returns: event, event, self