protected ULongSpanSet readUninitializedFromBacking(ULongSpanSet uninitialized) {
		return uninitialized;
	}
Extension point: Read from backing into this space, when acting as a cache.

@param uninitialized the ranges which need to be read.
@return the ranges which remain uninitialized
Ghidra/Framework/Emulation/src/main/java/ghidra/pcode/exec/BytesPcodeExecutorStateSpace.java