constructor(node, tensorMap, context){
        this.node = node;
        this.tensorMap = tensorMap;
        this.context = context;
        this.inputs = [];
        this.attrs = {};
        this.inputs = node.inputNames.map((name)=>this.getInput(name));
        if (node.rawAttrs != null) this.attrs = Object.keys(node.rawAttrs).reduce((attrs, key)=>{
            attrs[key] = this.getAttr(key);
            return attrs;
        }, {});
    }
Helper class for lookup inputs and params for nodes in the model graph.