code: def testStartServer(self):
      port = portpicker.pick_unused_port()
      server = xla_client.profiler.start_server(port)
      del server
  
imports: import unittest
  from absl.testing import absltest
  import numpy
  from xla.python import xla_client
label_desc: Use image node_id 2 for calling the ProfilerTest obj's underlying member method code with example usage: obj.testStartServer() without return types