https://docs.spring.io/spring-data/mongodb/reference/api/java/org/springframework/data/mongodb/core/index/MongoPersistentEntityIndexResolver.IndexDefinitionHolder.html
MongoPersistentEntityIndexResolver.IndexDefinitionHolder (Spring Data MongoDB - Core 5.0.5 API)
declaration: package: org.springframework.data.mongodb.core.index, class: MongoPersistentEntityIndexResolver, class: IndexDefinitionHolder
spring data mongodbcoreapi