Boost field in the new Java API Client

[RabBit_BR (andre.coelho)]

Hi @PodarcisMuralis

About this: What does "adjust_pure_negative" flag do?

@PodarcisMuralis

adjust_pure_negative

By default the boost will be 1 but you can edit it like this:

  BoolQuery.of(b -> b
      .should()
      .must()
      .filter()
      .boost(10f)
  );