code: function attachPriceIndustryDurationKeyToBid(bid, brandCategoryExclusion) {
    let initialCacheKey = bidCacheRegistry.getInitialCacheKey(bid);
    let duration = utils.deepAccess(bid, 'video.durationBucket');
    let cpmFixed = bid.cpm.toFixed(2);
    let pcd;
  
    if (brandCategoryExclusion) {
      let category = utils.deepAccess(bid, 'meta.adServerCatId');
      pcd = `${cpmFixed}_${category}_${duration}s`;
    } else {
      pcd = `${cpmFixed}_${duration}s`;
    }
  
    if (!bid.adserverTargeting) {
      bid.adserverTargeting = {};
    }
    bid.adserverTargeting[TARGETING_KEY_PB_CAT_DUR] = pcd;
    bid.adserverTargeting[TARGETING_KEY_CACHE_ID] = initialCacheKey;
    bid.videoCacheKey = initialCacheKey;
    bid.customCacheKey = `${pcd}_${initialCacheKey}`;
  }
docs: This function reads certain fields from the bid to generate a specific key used for caching the bid in Prebid Cache
  @param {Object} bid bid object to update
  @param {Boolean} brandCategoryExclusion value read from setConfig; influences whether category is required or not