layed on the right hand side of the chart. Based on the origin go code that does
    // similar for whenever we serialize a locator to display.
    function buildLocatorDisplayString(i) {
        let keys = Object.keys(i.keys);
        keys = sortKeys(keys);

        let annotations = [];
        for (let k of keys) {
            let v = i.keys[k];
            if (k === 'LocatorE2ETestKey') {
                annotations.push(`${k}/${JSON.stringify(v)}`);
            } else {
                annotations.push