code: def _ttl(self):
      # Default is 1 year.
      delta = 366 * 24 * 60 * 60
      delta = int(
          os.environ.get("METAFLOW_SFN_WORKFLOW_TIMEOUT", delta)
      )
      # Add 90 days since AWS Step Functions maintains execution history for
      # that long.
      return delta + (90 * 24 * 60 * 60) + int(time.time())
  
file_path: metaflow/metaflow/plugins/aws/step_functions/step_functions_decorator.py
imports: import os
  import json
  import time
  from metaflow.decorators import StepDecorator
  from metaflow.metadata import MetaDatum
  from .dynamo_db_client import DynamoDbClient
label_desc: Use image node_id 5 for calling the StepFunctionsInternalDecorator obj's underlying member method code with example usage: obj._ttl() and returns: unknown