code: def liquidSessions(self) -> List[TradingSession]:
      return self._parseSessions(self.liquidHours)
  
imports: import datetime
  from dataclasses import dataclass, field
  from typing import List, NamedTuple, Optional
  import ib_insync.util
label_desc: Use image node_id 2 for calling the ContractDetails obj's underlying member method code with example usage: obj.liquidSessions() and returns: self