new_contents: """Heuristics for adjusting the model search.
  
  Modules
  -------
  complexity
      Functions for calculating the complexity of a search.
  priority
      Functions for calculating the priority of a search.
  
  Notes
  -----
  
  """
  from .complexity import complexity
  from .priority import priority
  
  __all__ = [complexity, priority]
  
subject: load heuristic functions into the module namespace