code: def _list_runs(self):
      if self._key == "0":
          return self._data.runs()
      run = self._data.one_run(self._key)
      if not run:
          return []
      return [run]
  
imports: import json
  import logging
  import math
  import os
  import socket
  import subprocess
  import sys
  import threading
  import time
  from werkzeug.exceptions import NotFound
  from werkzeug.utils import redirect
  from guild import serving_util
  from guild import util
  from guild import var
label_desc: Use image node_id 4 for calling the TBServer obj's underlying member method code with example usage: obj._list_runs() and returns: list, self, list