How to use the wikidata-sdk.wikidataTimeToDateObject function in wikidata-sdk

if (!entity.claims) return;
  if (!entity.claims[prop]) return;

  let value;
  for (let i = 0; i < entity.claims[prop].length; i++) {
    let c = entity.claims[prop][i];
    if (c.rank === 'deprecated') continue;
    if (c.mainsnak.snaktype !== 'value') continue;

    // skip if we find an end time qualifier - P582
    let ended = false;
    let qualifiers = (c.qualifiers && c.qualifiers.P582) || [];
    for (let j = 0; j < qualifiers.length; j++) {
      let q = qualifiers[j];
      if (q.snaktype !== 'value') continue;
      let enddate = wdk.wikidataTimeToDateObject(q.datavalue.value.time);
      if (new Date() > enddate) {
        ended = true;
        break;
      }
    }
    if (ended) continue;

    value = c.mainsnak.datavalue.value;
    if (c.rank === 'preferred') return value;  // return immediately
  }
  return value;
}