PK_ERROR_code_t       PK_ENTITY_ask_partition
(
--- received arguments ---
PK_ENTITY_t           entity,     --- an entity

--- returned arguments ---
PK_PARTITION_t *const partition   --- partition of entity
                                  --- (possibly PK_PARTITION_null)
)


This function returns the partition containing the given entity. If the
entity is an attribute definition, the partition will be PK_PARTITION_null,
otherwise it will be non-null.


Specific Errors:
    PK_ERROR_rollback_not_started   Partitioned rollback is not active


This function should only be called when partitioned rollback has been started
with PK_DELTA_register_callbacks.