code: def end(self, session=None):
      if self._summary_writer:
          self._summary_writer.flush()
  
file_path: luminoth/luminoth/utils/hooks/var_vis_hook.py
imports: import tensorflow
  from tensorflow.python.training.summary_io import SummaryWriterCache
label_desc: Use image node_id 5 for calling the VarVisHook obj's underlying member method code with example usage: obj.end(session) without return types