<<rule>> Create: Multiplicity-One Containment Self-References

<<preserve>> toContainerClass : EClass <<create>> newContainmentReference : EReference <<create>> upperBound = "1" <<create>> containment = "true" <<forbid, post>> postContainerReference : EReference <<create>> eType <<forbid, post>> eOpposite <<forbid, post>> eOpposite <<create>> eContainingClass eStructuralFeatures