How to use the @opentelemetry/core.isTimeInput function in @opentelemetry/core

addEvent(
    name: string,
    attributesOrStartTime?: types.Attributes | types.TimeInput,
    startTime?: types.TimeInput
  ): this {
    if (this._isSpanEnded()) return this;
    if (this.events.length >= this._traceParams.numberOfEventsPerSpan!) {
      this._logger.warn('Dropping extra events.');
      this.events.shift();
    }
    if (isTimeInput(attributesOrStartTime)) {
      if (typeof startTime === 'undefined') {
        startTime = attributesOrStartTime as types.TimeInput;
      }
      attributesOrStartTime = undefined;
    }
    if (typeof startTime === 'undefined') {
      startTime = hrTime();
    }
    this.events.push({
      name,
      attributes: attributesOrStartTime as types.Attributes,
      time: timeInputToHrTime(startTime),
    });
    return this;
  }