class_docstr: This plugin adds option to call ``gc.collect`` after each test
code: def afterTest(self, test):
      gc.collect()
  
file_path: catboost/contrib/python/matplotlib/py2/matplotlib/testing/_nose/plugins/performgc.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import gc
  import os
  from nose.plugins import Plugin
label_desc: Use image node_id 3 for calling the PerformGC obj's underlying member method code with example usage: obj.afterTest(test) without return types