How to Flush Input Buffer for dsp.UDPReceiver

I am using dsp.UDPReceiver objects in my code. There are times when I put my code into an idle state. When I transition back to an active state I want to flush out all the stale data in the UDP buffer. I have tried the reset method for this object, but that doesn't seem to do it. Right now as a work-around, I simply call the receiver object until it returns an empty matrix to clear the buffer. This is a bit crude but works. Is there a 'cleaner' way to flush the input buffer for a dsp.UDPReceiver?

Whatever is implemented, I need it to be compatible with code generation.

Thanks.