code: def expect_alias(self):
      if self.event.anchor is None:
          raise EmitterError("anchor is not specified for alias")
      self.process_anchor("*")
      self.state = self.states.pop()
  
imports: from .error import YAMLError
  from .events import *
label_desc: Use image node_id 14 for calling the Emitter obj's underlying member method code with example usage: obj.expect_alias() without return types