code: def write_converge_file(mon, log_file="paramlog.py", **kwds):
      if isNull(mon):
          return  # XXX: throw error? warning? ???
      monitor = write_monitor(*raw_to_converge(*read_monitor(mon)))
      monitor._id = mon._id[:]  # HACK: workaround loss of id above
      monitor.k = (
          mon.k
      )  # HACK: workaround loss of k above (ensure is copy?)
      header = "written in 'converge' format"
      if "header" in kwds:
          header += "\n# " + str(kwds["header"])
          del kwds["header"]
      write_raw_file(monitor, log_file, header=header, **kwds)
      return
  
imports: from mystic.tools import list_or_tuple_or_ndarray
  from mystic.tools import isNull
  import sys
label_desc: Use image node_id 13 for calling a global function with example usage: write_converge_file(mon, log_file) without return types