Add a callback for spec-relations.

Signed-off-by: KayErikMuench <KayErikMuench@users.noreply.github.com>
Use a DTO to encapsulate access to a specification.

Signed-off-by: KayErikMuench <KayErikMuench@users.noreply.github.com>
Merge branch 'specrelation_callback' into development