class_docstr: Helper class used by nfa_to_dfa() to map back and forth between
  sets of states from the old machine and states of the new machine.
code: def highest_priority_action(self, state_set):
      best_action = None
      best_priority = LOWEST_PRIORITY
      for state in state_set:
          priority = state.action_priority
          if priority > best_priority:
              best_action = state.action
              best_priority = priority
      return best_action
  
file_path: catboost/contrib/tools/cython/Cython/Plex/DFA.py
imports: from __future__ import absolute_import
  from .None import Machines
  from .Machines import LOWEST_PRIORITY
  from .Transitions import TransitionMap
label_desc: Use image node_id 3 for calling the StateMap obj's underlying member method code with example usage: obj.highest_priority_action(state_set) and returns: best_action