code: def epoch_to_dttm(cls) -> str:
      return (
          "CAST(((CAST(DATE '1970-01-01' + ({col} / 86400) AS TIMESTAMP(0) "
          "AT 0)) AT 0) + (({col} MOD 86400) * INTERVAL '00:00:01' "
          "HOUR TO SECOND) AS TIMESTAMP(0))"
      )
  
imports: from superset.db_engine_specs.base import BaseEngineSpec, LimitMethod
label_desc: Use image node_id 1 for calling the TeradataEngineSpec obj's underlying member method code with example usage: obj.epoch_to_dttm(cls) and returns: str