https://docs.spring.io/spring-data/elasticsearch/reference/data-commons/4.1-SNAPSHOT/api/java/org/springframework/data/domain/Sort.NullHandling.html
Sort.NullHandling (Spring Data Core 4.1.0-SNAPSHOT API)
declaration: package: org.springframework.data.domain, class: Sort, enum: NullHandling
spring datasortcoresnapshotapi