def ParseIndexDefinitions(document):
  try:
    return yaml_object.BuildSingleObject(IndexDefinitions, document)
  except yaml_errors.EmptyConfigurationFile:
    return None
Returns the FOR UPDATE SQL clause to lock rows for an update operation.
dataset/ETHPy150Open CollabQ/CollabQ/.google_appengine/google/appengine/datastore/datastore_index.py/ParseIndexDefinitions--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/db/backends/__init__.py/BaseDatabaseOperations.for_update_sql