code: def run(port, client_num, servermodelpath):
      conf = open("ppml-conf.yaml", "w")
      conf.write("serverPort: " + str(port) + "\n")
      conf.write("clientNum: " + str(client_num) + "\n")
      conf.write("fgBoostServerModelPath: " + servermodelpath + "\n")
      conf.close()
  
      fl_server = FLServer()
      fl_server.build()
      fl_server.start()
      fl_server.block_until_shutdown()
  
imports: import os
  import click
  import fnmatch
  import sys
  from bigdl.ppml.fl.fl_server import FLServer
label_desc: Use image node_id 1 for calling a global function with example usage: run(port, client_num, servermodelpath) without return types