AddressIterator getBookmarkAddresses(String type) {
		ObjectPropertyMap map = getMap(type, false);
		if (map != null) {
			return map.getPropertyIterator();
		}
		return emptyAddressIterator;
	}
Get addresses at which bookmarks of the specified type exist.
@param type bookmark type
@return address iterator
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/bookmark/OldBookmarkManager.java