By Bundle And Model Id
@Serializable
@SerialName(value = "byBundleAndModelId" )
References a model unambiguously by the pair of its enclosing bundle and the model identifier within that bundle. Use when a document references multiple bundles and a scenario must select exactly one of them (the byProviderId variant relies on flat-modelId lookup which is ambiguous in a multi-bundle document).
The runtime resolves this reference by calling ksl.app.bundle.BundleModelProvider.provideModel(bundleId, modelId) against the provider built from the document's bundleRefs.