API Reference > presentation-common > Content > DescriptorSource DescriptorSource Interface Descriptor properties Implemented by Descriptor Properties Name Type Description categories Readonly undefined | CategoryDescription[] A list of content field categories used in this descriptor contentFlags Readonly number ContentFlags used to create the descriptor displayType Readonly string Display type used to create the descriptor fields Readonly Field[] A list of fields contained in the descriptor filterExpression Readonly undefined | string Content filtering ECExpression selectClasses Readonly SelectClassInfo[] A list of classes that will be selected from when creating content with this descriptor selectionInfo Readonly undefined | SelectionInfo Selection info used to create the descriptor sortDirection Readonly undefined | SortDirection Sorting direction sortingField Readonly undefined | Field Field used to sort the content Defined in presentation/common/src/presentation-common/content/Descriptor.ts Line 236 Last Updated: 29 November, 2022