class_docstr: This class handles iteration events to start/stop samplers' threads.
docstr: Get samplers from application and try to run sampler's threads.
  
  (deprecating)
  
  :param sender:
  :param _unused_msg:
  :return:
docstr_tok: ["Get","samplers","from","application","and","try","to","run","sampler","'s","threads",".","(","deprecating",")",":","param","sender",":",":","param","_unused_msg",":",":","return",":"]
code: def start_sampler_threads(self, _sender, **_unused_msg):
      """
      Get samplers from application and try to run sampler's threads.
  
      (deprecating)
  
      :param sender:
      :param _unused_msg:
      :return:
      """
      pass
  
imports: import tensorflow
  from niftynet.engine.signal import SESS_FINISHED
  from niftynet.utilities.util_common import traverse_nested
label_desc: Use image node_id 2 for calling the SamplerThreading obj's underlying member method code with example usage: obj.start_sampler_threads(_sender) without return types