class_docstr: Orders are never automatically canceled.
      
code: def should_cancel(self, event):
      return False
  
file_path: zipline/zipline/finance/cancel_policy.py
imports: import abc
  from abc import abstractmethod
  from six import with_metaclass
  from zipline.gens.sim_engine import SESSION_END
label_desc: Use image node_id 2 for calling the NeverCancel obj's underlying member method code with example usage: obj.should_cancel(event) and returns: False