private static void logVariableTypes(IntermediateGraph graph) {
        for (IntermediateOperation operation : graph.operations().values()) {
            if ( ! (operation instanceof Constant)) continue;
            if ( ! operation.type().isPresent()) continue; // will not happen
            log.info("Importing model variable " + operation.name() + " as " + operation.vespaName() +
                    " of type " + operation.type().get());
        }
    }
Log all model Variables (i.e file constants) imported as part of this with their ordered type.
This allows users to learn the exact types (including dimension order after renaming) of the Variables
such that these can be converted and fed to a parent document independently of the rest of the model
for fast model weight updates.
model-integration/src/main/java/ai/vespa/rankingexpression/importer/ModelImporter.java