public VarnodeData getSpacebase(AddrSpace basespace, int i) {
		int index = basespace.getIndex();
		if (index < spacebaselist.size()) {
			VectorSTL<VarnodeData> datalist = spacebaselist.get(index);
			if (i < datalist.size()) {
				return datalist.get(i);
			}
		}
		throw new LowlevelError(
			"Space base register does not exist for space: " + basespace.getName());
	}
Retrieve a particular spacebase register associated with the virtual address space
basespace.  This register serves as a base offset to anchor basespace within
its containing space.
@param basespace is the virtual space to find a spacebase register for
@param i is the index of the particular spacebase register
@return a reference to the spacebase register
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/pcodeCPort/translate/Translate.java