var fluid = require("infusion");
var my = fluid.registerNamespace("my");

fluid.registerNamespace("my.base.grade");
my.base.grade.expander = function () {
    return { fromBase: true };
};

fluid.defaults("my.base.grade", {
    gradeNames: ["fluid.component"],
//    expanded: "@expand:my.base.grade.expander()"
    expanded: {
	expander: {
	    func: "my.base.grade.expander",
	    args: []
	}
    }
});

fluid.defaults("my.extended.grade", {
    gradeNames: ["my.base.grade"],
    // expanded: false // <-- merged over the inherited option
    // Not merged.
    expanded: {
	fromExtended: true
    }
});

var component = my.extended.grade();
console.log(JSON.stringify(component.options.expanded)); // { "fromBase": true }