||The AbstractImageSource class provides a concrete implementation of the ImageSource
||The RemoteImageSource class is used to dynamically fault Image instances from the remote
server to the local process space.
By specifying the depth, you control how many Image instances
are retrieved by each fault.
||A RespectiveImageGraph manages to keep Image instances in their respective partition.
||The SourcedImageGraph class is a subclass of ImageGraph where that
will delegate requests for an Image instance to an instance of
an ImageSource class, if they are not already 'local' to the
Use the getImage( Icon icon ) method to 'boot strap' a given
instance of a SourcedImageGraph class.