code: def __contains__(self, name):
      return name in self.__dict__
  
imports: from warnings import warn
  import pandas
  from .assets import Asset
  from .utils.enum import enum
  from ._protocol import BarData, InnerPosition
label_desc: Use image node_id 4 for calling the Event obj's underlying member method code with example usage: obj.__contains__(name) and returns: unknown