=> Session, Record.
* a Session is a container of one cursor and one user
* a Record is a container for the res_type and res_id, in this object, the right
names are model and id.
Examples:
session = Session(cr, uid)
record = Record(res_type, res_id)
record.mode, record.id
A new class named 'WorkflowService' is a wrapper for the instance.* functions.
bzr revid: stw@openerp.com-20131023125343-uo0bq52n86ae0fb0