public void addGetter(Method method, SerializerGen serializer, int added, int removed) {
   check(method.getGenericParameterTypes().length == 0);
   check(isPublic(method.getModifiers()));
   String fieldName = stripGet(method.getName(), method.getReturnType());
   check(!fields.containsKey(fieldName), "Duplicate field '%s'", method);
   FieldGen fieldGen = new FieldGen();
   fieldGen.method = method;
   fieldGen.serializer = serializer;
   fieldGen.versionAdded = added;
   fieldGen.versionDeleted = removed;
   fieldGen.offset = lastOffset;
   lastOffset += getType(method.getReturnType()).getSize();
   fields.put(fieldName, fieldGen);
 }