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N2CMS: Limit the number of ContentItems of a certain type below another ContentItem

I am using N2CMS and I have two classes that inherit from ContentItem - for example HomePage and NewsPage. NewsPage is only set in the HomePage section (using the RestrictParents attribute):

[RestrictParents(typeof(HomePage))]

Can I make it so that the maximum number of NewsPages (in this case 1) is below the home page?

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The answer is that you can use

[RestrictCardinality]


attribute. In the example I gave in the question, you should use

[RestrictCardinality(ComparableType=typeof(NewsPart), MaximumCount=1)]
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