If required, we may provide a public option for making the query parser backend configurable. From PR #273:

I think we should support this ability, I'm not sure exposing the raw parser property is the right thing.
Maybe if this was using shortcuts like native | hibernate-search ?
My guts tell me that when you use Hibernate Search vs native, other configurations are going to change and maybe a more meta property is preferable.
Let's keep it private for now and adjust when we see the use case. We can always point that option to early adopters anyways.