/// Returns the descriptor for an item, or null if it's of an unknown type.
CollectionItemTypeBase *get_type_for_item(const Variant &) const;
protected:
/** Adds a source for automatically loading items. Sources are consulted
in the order they are added. */
/// Returns the descriptor for an item, or null if it's of an unknown type.
CollectionItemTypeBase *get_type_for_item(const Variant &) const;
protected:
/** Adds a source for automatically loading items. Sources are consulted
in the order they are added. */