How to reset a VoxelBlockGrid?

I've been using the new VoxelBlockGrid for a reconstruction system. It works well. But I'm not sure what's the best way to reset it? ScalableTSDFVolume or UniformTSDFVolume have a reset() function to do that but VoxelBlockGrid doesn't.

In my system I'm repeatedly reseting the TSDF because I'm just interested in the integration of the last few frames. In fact what I'd like is to be able to deintegrate pointclouds so as to have a sort of FIFO integration of the last N pointclouds. I see this was requested in #2613 but I don't see it's available yet. So as a compromise I reset the TSDF periodically.

For the moment I'm recreating the VoxelBlockGrid every time. Any better way of doing this?