A collection of items, each of which defines a chart template.
property Catalog: TRVReportChartCatalogCollection;
When a chart item is added to a report, it is linked to one of the items in this collection (via the item's Name property). During report generation, chart images are created based on the selected template.
This property is reintroduced in components inherited from TRVReportCustomChartCatalog to provide a collection of items that actually define chart templates.