This method is used by an ImageConsumer to request that
the ImageProducer attempt to resend the image data one
more time in TOPDOWNLEFTRIGHT order so that higher
quality conversion algorithms which depend on receiving
pixels in order can be used to produce a better output
version of the image.
This method both registers the given ImageConsumer object
as a consumer and starts an immediate reconstruction of
the image data which will then be delivered to this
consumer and any other consumer which may have already
been registered with the producer.