int depth = bb.getInt();
filter = new StepFilter(tid, size, depth);
break;
case JdwpConstants.ModKind.INSTANCE_ONLY:
ObjectId oid = idMan.readObjectId(bb);
filter = new InstanceOnlyFilter(oid);
break;
default:
throw new NotImplementedException("modKind " + modKind
+ " is not implemented.");
}