||AbstractImages holds the images and provides ways to insert, retrieve and
||Cache with 'ckey' keys.
||This builder can be used for 'attachments' builders.
||ImageCaches (aka as 'icaches') is a system-like builder used by
builders with the 'Images' class.
||If this class is used as the class for your builder, then an 'handle' byte field is assumed to
contain an image.
||Like InsRel, only with a GUIIndicator tailored for a relation with a 'pos' field.
||An attachment builder where, aside from storing the binary data in the database, you can point out a
binary resource on another server using an url.
||The resources builder can be used by
ResourceLoader to load resources from
(configuration files, classes, resourcebundles).
||The URL builder provides nice gui indications for objects with an 'url' field.