     const timingData = this.opsTimingData_;
      let op;
      let opIndex;

      for (let i = 0; i < ops.length; i++) {
        op = ops[i];

        if (op.cmd_time === undefined) continue;

        // Try to locate the entry for the current operation
        // based on its name. If that fails, then create one for it.
        opIndex = opsTimingDataIndexHash_[op.cmd_string] || null;

        if (opIndex === null) {
          timingData.push({
            cmd_time: 0,
            cmd_string: op.cmd_str