code: def setUp(self) -> None:
      self.fl_server = FLServer()
      self.fl_server.set_port(self.port)
      self.fl_server.build()
      self.fl_server.start()
  
file_path: BigDL/python/ppml/test/bigdl/ppml/fl/py4j/test_psi.py
imports: import unittest
  from bigdl.ppml.fl.algorithms.psi import PSI
  from bigdl.ppml.fl.fl_server import FLServer
  from bigdl.ppml.fl import *
  from bigdl.ppml.fl.utils import FLTest
label_desc: Use image node_id 1 for calling the TestPSI obj's underlying member method code with example usage: obj.setUp() without return types