The existing hypermedia example provides an overview on related resources (Employee, Manager), how to link them and evolve api.
In addition to that, I would like to see example code on how to create relationships and how to provide hypermedia links for that. Especially when it comes to many-to-many relationships.
Imagine the Employee works in different Projects, so these two resources are many-to-many.
How do we add hypermedia links to create these relationships and how are these POST/PUT requests modeled in the controllers? I would be grateful to see this in a spring-hateoas-example.