Hierarchy
ISearchAdmin:IBuildServer:IBuildCatalogs:IBuildCatalog:IExtensions
This interface specifies a file extension that Search crawls or avoids when building a catalog.
You create an IExtension interface object by calling the IExtensions.Add method. You access a specific IExtension interface object by calling the IExtensions.Item property. You can access all of the IExtension interface objects by iterating through the IExtensions collection in a for each loop.