void fillOutputExpressions() {
        for (var spec : outputSpecs) {
            var node = new OnnxExpressionNode(this, spec.onnxName, spec.expectedType, spec.outputAs);
            exprPerOutput.put(spec.outputAs, node);
        }
    }
A named ONNX model that should be evaluated with OnnxEvaluator.

@author lesters
model-evaluation/src/main/java/ai/vespa/models/evaluation/OnnxModel.java