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[[TicketQuery(summary=PRO_REGISTRY_PARENT_CHILD_R0, format=table, col=summary|owner|status|type|component|priority|effort|importance, rows=description|analysis_owners|analysis_reviewers|analysis_score|design_owners|design_reviewers|design_score|implementation_owners|implementation_reviewers|implementation_score|test_owners|test_reviewers|test_score|)]]

= Analysis =

== Overview ==

The aim of this task is to improve the relation parent<=>child that has been constructed with the aim of the @Own annotation.

== Task requirements ==

 * Misuse detection:
  * a method with an @Own annotation should not return a property containing non-pro object.
 * Multiple same children with a particular parent:
  * same children should be possible to be added in a parent.
  * if one of it is removed from the parent the other should remain in the registry.
 * Unit test for the above scenarios should be provided.

== Task result ==
 * source code.

== Implementation idea ==
 * review the !ObjectProperty and the !ListProperty classes and add some more things.
 * review the !OwnershipRegistry class and fix it to meet the requirements above.
 * write a unit test.

== Related ==
 * [wiki:CORE_ADDITIONS_R0]

== How to demo ==
 * run the unit tests that have been resulted from the task.

= Design =

= Implementation =
^(Implementation results should be described and linked here (from the wiki or the repository))^

= Testing =

= Comments =
^(Write comments for this or later revisions here.)