<<rule>> Create: Containment References

<<preserve>> toContainerClass : EClass <<create>> newContainmentReference : EReference <<create>> containment = "true" <<preserve>> toContainedClass : EClass <<forbid, post>> postContainerReference : EReference <<create>> eType <<forbid, post>> eOpposite <<forbid, post>> eOpposite <<create>> eContainingClass eStructuralFeatures