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Complete "Mapping Maps" chapter of User Guide.
https://docs.jboss.org/hibernate/orm/6.2/userguide/html_single/Hibernate_User_Guide.html#collections-map
Complete "Mapping Maps" chapter of User Guide.
https://docs.jboss.org/hibernate/orm/6.2/userguide/html_single/Hibernate_User_Guide.html#collections-map