old_contents: import get_trips
  from common import store_trip_in_db
  #import get_trips
  from trip import E_Mission_Trip
  #import Profiles
  
  def calc_alternative_trips(trip_iterator):
  
      while trip_iterator.hasNext():
          list_of_perturbed_trips = find_perturbed_trips(trip_iterator.next())
          schedule_queries(list_of_perturbed_trips)
  
  def store_alternative_trips(tripObj):
      # store populated tripObj with _id (concatenated trip id and user id)
  
  
  def get_alternative_trips(_id):
      # User Utility Pipeline calls this to get alternatve trips for one original trip (_id)
      
  
  
  #get_user_ids(filter_queries)
  #bare_trips = get_bare_trips()
  #augment_trips()
  
new_contents: import get_trips
  from common import store_trip_in_db
  #import get_trips
  from trip import E_Mission_Trip
  #import Profiles
  
  def calc_alternative_trips(trip_iterator):
  
      while trip_iterator.hasNext():
          list_of_perturbed_trips = find_perturbed_trips(trip_iterator.next())
          schedule_queries(list_of_perturbed_trips)
  
  def store_alternative_trips(tripObj):
      # store populated tripObj with _id (concatenated trip id and user id)
      return True
  
  def get_alternative_trips(_id):
      # User Utility Pipeline calls this to get alternatve trips for one original trip (_id)
      return []    
  
  
  #get_user_ids(filter_queries)
  #bare_trips = get_bare_trips()
  #augment_trips()
  
subject: add returns so alternative module is actually stubbed