docs: @SuppressWarnings("unchecked")
      public Set<QueryableEntry> query(Predicate predicate) {
          stats.incrementQueryCount();
  
          if (!haveAtLeastOneIndex() || !(predicate instanceof IndexAwarePredicate)) {
              return null;
          }
  
          IndexAwarePredicate indexAwarePredicate = (IndexAwarePredicate) predicate;
          QueryContext queryContext = queryContextProvider.obtainContextFor(this);
          if (!indexAwarePredicate.isIndexed(queryContext)) {
              return null;
          }
  
          Set<QueryableEntry> result = indexAwarePredicate.filter(queryContext);
          if (result != null) {
              stats.incrementIndexedQueryCount();
              queryContext.applyPerQueryStats();
          }
  
          return result;
      }