code: def setUp(self) -> None:
      self.update_available_port()
      self.fl_server = FLServer()
      self.fl_server.set_port(self.port)
      init_fl_context(1, self.target)
  
imports: from multiprocessing import Process
  import unittest
  from uuid import uuid4
  import numpy
  import pandas
  import os
  import math
  from bigdl.ppml.fl import *
  from bigdl.ppml.fl.algorithms.fgboost_regression import FGBoostRegression
  from bigdl.ppml.fl.fl_server import FLServer
  from bigdl.ppml.fl.utils import init_fl_context
  from bigdl.ppml.fl.utils import FLTest
label_desc: Use image node_id 2 for calling the TestFGBoostRegression obj's underlying member method code with example usage: obj.setUp() without return types