PK_ERROR_code_t   PK_SESSION_ask_parts
(
--- returned arguments ---
int        *const n_parts,          --- number of parts (>= 0)
PK_PART_t **const parts             --- parts (optional)
)


This function returns all parts in the session.


The output array parts is optional. If it is set to NULL, the function
will only compute the number of parts in the session.