LFQ: why can't we have projections?

[denadai2]

As title says, why can't we have projections in lfq?

vector-quantize-pytorch/vector_quantize_pytorch/residual_lfq.py

Line 86 in 5ae9c79

assert all([not lfq.has_projections for lfq in self.layers])

they might be useful to have a better learning residual by residual

thanks