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The Is Used In widget shows an overview of content items that are using the currently selected content item. Before In XperienCentral versions 10.22.0 and earlier, the usage of content items referring to a custom content type was not detected for content items from a custom content type, The widget would only show a count of 0 used content items. The API of several content items in XperienCentral has been extended with a method for implementing this used-in relationship for custom content types. This functionality is available via the new abstract method:
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