_get_childs_()

Return ref to childs array

_add_childs_($object1[, $object2])

Insert set of objects into container

_clear_childs_

Clear all childs (pre, post also)

_set_childs_ @childs_set

Clear all childs (except "pre" and "post" objects), and set to @childs_set

pre_fetch ($session)

Output data precede to fetch method. By default output "pre" objects;

post_fetch ($session)

Output data follow to fetch method. By default output "post" objects;