default Optional<ActionDefinition> findAction(final QName qname) {
// 'action' identifier must never collide with another element, hence if we look it up and it ends up being
// an ActionDefinition, we have found a match.
- return get(Namespace.class, qname)
+ return get(SchemaTreeNamespace.class, qname)
.flatMap(child -> child instanceof ActionDefinition ? Optional.of((ActionDefinition) child)
: Optional.empty());
}