constructor(modelUrl, loadOptions = {}, tfio = (0, _tfjsCore.io)){
        this.modelUrl = modelUrl;
        this.loadOptions = loadOptions;
        this.version = "n/a";
        this.io = tfio;
        if (loadOptions == null) this.loadOptions = {};
        this.resourceManager = new (0, _resourceManager.ResourceManager)();
    }
@param modelUrl url for the model, or an `io.IOHandler`.
@param weightManifestUrl url for the weight file generated by
scripts/convert.py script.
@param requestOption options for Request, which allows to send credentials
and custom headers.
@param onProgress Optional, progress callback function, fired periodically
before the load is completed.