private void fillinClass(short classID, Record res) {
//		ClassDefItem classDefItem = dexHeader.getClassDefs().get(classID);
		res.tag = ConstantPool.CLASS_REFERENCE;
		res.token = "<none>";
		if (classID == -1) {//java.lang.Object, no super class
			res.type = DataType.DEFAULT;
		}
		else {
			res.type = dexHeader.getDataType(program, classID);
			if (res.type instanceof Pointer) {
				res.token = ((Pointer) res.type).getDataType().getName();
			}
		}
	}
Map Ghidra's generic ConstantPool interface onto the Dex specific constant pool
Ghidra/Processors/Dalvik/src/main/java/ghidra/dalvik/dex/inject/ConstantPoolDex.java