get
fun <P, C : ObjectWithUidInterface> getChildrenUids(parentList: Collection<P>, childExtractor: (P) -> List<C>): Set<String>
Returns a Set of uids of the children selected by a lambda function.
Return
A Set with the uids of the children
Parameters
objects
A collection of objects with children with uid.
child
The lambda to extract the child list from the parent