code: def compose_scalar_node(self, anchor):
      event = self.get_event()
      tag = event.tag
      if tag is None or tag == "!":
          tag = self.resolve(ScalarNode, event.value, event.implicit)
      node = ScalarNode(
          tag,
          event.value,
          event.start_mark,
          event.end_mark,
          style=event.style,
      )
      if anchor is not None:
          self.anchors[anchor] = node
      return node
  
file_path: catboost/contrib/python/PyYAML/py2/yaml/composer.py
imports: from error import MarkedYAMLError
  from events import *
  from nodes import *
label_desc: Use image node_id 7 for calling the Composer obj's underlying member method code with example usage: obj.compose_scalar_node(anchor) and returns: node