title: About the use of @ForceDiscriminator/@DiscriminatorOptions(force=true)
body: <p>Why is <code>@ForceDiscriminator</code> or its equivalent <code>@DiscriminatorOptions(force=true)</code> necessary in some cases of inheritance and polymorphic associations? It seems to be the only way to get the job done. Are there any reasons not to use it?</p>