@Override public void registerModel(ApplicationFile path, OnnxModelOptions onnxModelOptions) {
            models.put(path.toString(), new ModelInfo(path.toString(), 1, 1, onnxModelOptions));
        }
Verifies that the constant with the given name exists, and - only if an expected size is given -
that the content of the constant is available and has the expected size.
config-model/src/test/java/com/yahoo/vespa/model/ml/ImportedModelTester.java