@SuppressWarnings({ "rawtypes", "unchecked" })
private <K, C extends Mutable<?, ?, ?>, N extends IdentifierNamespace<K, ? extends StmtContext<?, ?, ?>>>
AbstractPrerequisite<C> mutatesCtxImpl(final StmtContext<?, ?, ?> context, final Class<N> namespace,
final K key, final ModelProcessingPhase phase) {
checkNotRegistered();
final PhaseModificationInNamespace<C> mod = new PhaseModificationInNamespace<>(EFFECTIVE_MODEL);
addReq(mod);
addMutation(mod);
contextImpl(context).onNamespaceItemAddedAction((Class) namespace, key, mod);
return mod;
}