tat'];
      if (v8Runtime !== undefined) {
        const v8RuntimeObject = JSON.parse(v8Runtime);
        for (const runtimeCall in v8RuntimeObject) {
          // When the V8 Runtime Object contains 2 values, the 2nd value
          // always represents the V8 Runtime duration.
          if (v8RuntimeObject[runtimeCall].length === 2) {
            if (breakdownTree.v8_runtime.events[runtimeCall] === undefined) {
              breakdownTree.v8_runtime.events[runtimeCall] = 0;
            }
            cons