How to config org.hibernate.cfg.Configuration in spring-boot-starter-data-jpa

I use spring-boot-starter-data-jpa,and i want to register a custom BasicType in Hibernate.

According to the hibernate documentation,i need org.hibernate.cfg.Configuration object to register.

configuration.registerTypeContributor( (typeContributions, serviceRegistry) -> {
    typeContributions.contributeType( BitSetType.INSTANCE );
} );

But in spring-boot I don't know how to get org.hibernate.cfg.Configuration.

Does anyone know how to do it?