Implementation of the JPA/Hibernate many-to-many with attributes example code from https://vladmihalcea.com/the-best-way-to-map-a-many-to-many-association-with-extra-columns-when-using-jpa-and-hibernate/ in Spring Data JPA
Repository from Github https://github.comThomHurks/spring-data-jpa-many-to-many-with-attrs-issue