code: def clientFunction(args, files):
      print(
          "client function call with args "
          + str(args)
          + " and files "
          + str(files)
      )
  
      modelfile = "model.dat"
      filename = files.get("model") or os.path.join(
          fs_tracker.get_artifact("modeldir"), modelfile
      )
  
      print("Trying to load file {}".format(filename))
  
      if os.path.exists(filename):
          with open(filename, "rb") as f:
              args = pickle.loads(f.read()) + 1
  
      else:
          print("Trying to write file {}".format(filename))
          with open(filename, "wb") as f:
              f.write(pickle.dumps(args, protocol=2))
  
      return args
  
imports: import os
  import pickle
  from studio import fs_tracker
label_desc: Use image node_id 1 for calling a global function with example usage: clientFunction(args, files) and returns: args