code: def tmp_file_sink(prefix=None, suffix=None):
      tmpfile = tempfile.NamedTemporaryFile(
          delete=True, prefix=prefix, suffix=suffix
      )
      tmpfile.close()
      return tmpfile.name
  
label_desc: Use image node_id 1 for calling a global function with example usage: tmp_file_sink(prefix, suffix) and returns: tmpfile