private Varnode getByte(String frameMapName, long offset) {
		HashMap<Long, Varnode> frameMap = getFrameMap(frameMapName, false);
		if (frameMap != null) {
			Varnode v = frameMap.get(offset);
			if (v != null) {
				return v;
			}
		}
		if (previousState != null) {
			return previousState.getByte(frameMapName, offset);
		}
		return null;
	}
Normalizes varnode expression by removing use of MaskedVarnodeOperation if present and ensure that
returned varnode has a size of targetSize.
@param v
@param targetSize
@return
Ghidra/Features/Base/src/main/java/ghidra/util/state/ContextState.java