code: def parse_node(self, block=False, indentless_sequence=False):
      if self.check_token(AliasToken):
          token = self.get_token()
          event = AliasEvent(
              token.value, token.start_mark, token.end_mark
          )
          self.state = self.states.pop()
      else:
          anchor = None
          tag = None
          start_mark = end_mark = tag_mark = None
          if self.check_token(AnchorToken):
              token = self.get_token()
              start_mark = token.start_mark
              end_mark = token.end_mark
              anchor = token.value
              if self.check_token(TagToken):
                  token = self.get_token()
                  tag_mark = token.start_mark
                  end_mark = token.end_mark
                  tag = token.value
          elif self.check_token(TagToken):
              token = self.get_token()
              start_mark = tag_mark = token.start_mark
              end_mark = token.end_mark
              tag = token.value
              if self.check_token(AnchorToken):
                  token = self.get_token()
                  end_mark = token.end_mark
                  anchor = token.value
          if tag is not None:
              handle, suffix = tag
              if handle is not None:
                  if handle not in self.tag_handles:
                      raise ParserError(
                          "while parsing a node",
                          start_mark,
                          "found undefined tag handle %r" % handle,
                          tag_mark,
                      )
                  tag = self.tag_handles[handle] + suffix
              else:
                  tag = suffix
          # if tag == '!':
          #    raise ParserError("while parsing a node", start_mark,
          #            "found non-specific tag '!'", tag_mark,
          #            "Please check 'http://pyyaml.org/wiki/YAMLNonSpecificTag' and share your opinion.")
          if start_mark is None:
              start_mark = end_mark = self.peek_token().start_mark
          event = None
          implicit = tag is None or tag == "!"
          if indentless_sequence and self.check_token(BlockEntryToken):
              end_mark = self.peek_token().end_mark
              event = SequenceStartEvent(
                  anchor, tag, implicit, start_mark, end_mark
              )
              self.state = self.parse_indentless_sequence_entry
          else:
              if self.check_token(ScalarToken):
                  token = self.get_token()
                  end_mark = token.end_mark
                  if (token.plain and tag is None) or tag == "!":
                      implicit = (True, False)
                  elif tag is None:
                      implicit = (False, True)
                  else:
                      implicit = (False, False)
                  event = ScalarEvent(
                      anchor,
                      tag,
                      implicit,
                      token.value,
                      start_mark,
                      end_mark,
                      style=token.style,
                  )
                  self.state = self.states.pop()
              elif self.check_token(FlowSequenceStartToken):
                  end_mark = self.peek_token().end_mark
                  event = SequenceStartEvent(
                      anchor,
                      tag,
                      implicit,
                      start_mark,
                      end_mark,
                      flow_style=True,
                  )
                  self.state = self.parse_flow_sequence_first_entry
              elif self.check_token(FlowMappingStartToken):
                  end_mark = self.peek_token().end_mark
                  event = MappingStartEvent(
                      anchor,
                      tag,
                      implicit,
                      start_mark,
                      end_mark,
                      flow_style=True,
                  )
                  self.state = self.parse_flow_mapping_first_key
              elif block and self.check_token(BlockSequenceStartToken):
                  end_mark = self.peek_token().start_mark
                  event = SequenceStartEvent(
                      anchor,
                      tag,
                      implicit,
                      start_mark,
                      end_mark,
                      flow_style=False,
                  )
                  self.state = self.parse_block_sequence_first_entry
              elif block and self.check_token(BlockMappingStartToken):
                  end_mark = self.peek_token().start_mark
                  event = MappingStartEvent(
                      anchor,
                      tag,
                      implicit,
                      start_mark,
                      end_mark,
                      flow_style=False,
                  )
                  self.state = self.parse_block_mapping_first_key
              elif anchor is not None or tag is not None:
                  # Empty scalars are allowed even if a tag or an anchor is
                  # specified.
                  event = ScalarEvent(
                      anchor,
                      tag,
                      (implicit, False),
                      "",
                      start_mark,
                      end_mark,
                  )
                  self.state = self.states.pop()
              else:
                  if block:
                      node = "block"
                  else:
                      node = "flow"
                  token = self.peek_token()
                  raise ParserError(
                      "while parsing a %s node" % node,
                      start_mark,
                      "expected the node content, but found %r"
                      % token.id,
                      token.start_mark,
                  )
      return event
  
imports: from .error import MarkedYAMLError
  from .tokens import *
  from .events import *
  from .scanner import *
label_desc: Use image node_id 15 for calling the Parser obj's underlying member method code with example usage: obj.parse_node(block, indentless_sequence) and returns: event