@Override
        public FileReference addBlob(String name, ByteBuffer blob) {
            writeBlob(blob, name);
            return addFile(name);
        }
Create a ModelsEvaluator from the models found in the modelsPath. Does
not need to be in a application package.

@param modelsPath Path to a directory containing models to import
@return a ModelsEvaluator containing the imported models
config-model/src/main/java/com/yahoo/vespa/model/container/ml/ModelsEvaluatorTester.java