class_docstr: BaseApplication represents an interface.
  
  Each application ``type_str`` should support to use
  the standard training and inference driver.
class_docstr_tok: ["BaseApplication","represents","an","interface",".","Each","application","``","type_str","``","should","support","to","use","the","standard","training","and","inference","driver","."]
docstr: remove application instance if there's any.
  
  :return:
docstr_tok: ["remove","application","instance","if","there","'s","any",".",":","return",":"]
code: def stop():
      """
      remove application instance if there's any.
  
      :return:
      """
      SingletonApplication.clear()
  
imports: import os
  from argparse import Namespace
  import tensorflow
  from six import with_metaclass
  from niftynet.engine.signal import TRAIN, INFER, EVAL
label_desc: Use image node_id 15 for calling the BaseApplication obj's underlying member method code with example usage: obj.stop() without return types