Stops any communiction, processing and decoding and then closes the object.
The cache file will be saved when this function is called.
Use this function to stop the JpipRasterImageViewer object while it is loading or decoding.
Call this function when one is through using the JpipRasterImageViewer in order to free the resources.
For an example of calling this function at the end of loading an image to free the resources, refer to JpipRasterImageViewer.