public Varnode get(int spaceID, Varnode offsetValue, int size) {
		try {
			return get(spaceID, offsetValue, size, TaskMonitor.DUMMY);
		}
		catch (CancelledException e) {
			throw new AssertException(e); // unexpected
		}
	}
Retrieve the value/operation stored within the specified space using an offset
identified by a value/operation.
@param spaceID
@param offsetValue
@param size
@return stored value/operation or null or DUMMY_BYTE_VARNODE
Ghidra/Features/Base/src/main/java/ghidra/util/state/ContextState.java