[Plugin: WP Super Cache] Cache specific plugin file?

I’m writing a custom plugin that takes data from a custom DB table, then generates XML for a Flash movie embedded in a specific page. The XML is generated by one PHP file whose sole purpose is to parse the DB and echo XML.

Is there any way I can cache the echo results of this PHP file (which is in a plugin folder in wp-plugins) using WP Super Cache?

http://wordpress.org/extend/plugins/wp-super-cache/