private void setPathLevel() {
   ObjectMapper objectMapper = parseContext.nestedScope().getObjectMapper();
   if (objectMapper == null) {
     parentFilter = parseContext.fixedBitSetFilter(NonNestedDocsFilter.INSTANCE);
   } else {
     parentFilter = parseContext.fixedBitSetFilter(objectMapper.nestedTypeFilter());
   }
   childFilter = parseContext.fixedBitSetFilter(nestedObjectMapper.nestedTypeFilter());
   parentObjectMapper = parseContext.nestedScope().nextLevel(nestedObjectMapper);
 }
 private void resetPathLevel() {
   parseContext.nestedScope().previousLevel();
 }