@Override
			public Iterator<T> iterator() {
				try {
					return store.iterator(columnIndex, fieldSpan, direction);
				}
				catch (IOException e) {
					errHandler.dbError(e);
					return null;
				}
			}
Iterate over the objects as ordered by the index

@return the iterator
Ghidra/Debug/ProposedUtils/src/main/java/ghidra/util/database/DBCachedObjectIndex.java