- * Number of watchers of each page who have visited recent edits to that page
- *
- * @param array $targetsWithVisitThresholds array of pairs (LinkTarget $target, mixed $threshold),
- * $threshold is:
- * - a timestamp of the recent edit if $target exists (format accepted by wfTimestamp)
- * - null if $target doesn't exist
- * @param int|null $minimumWatchers
- * @return array multi-dimensional like $return[$namespaceId][$titleString] = $watchers,
- * where $watchers is an int:
- * - if the page exists, number of users watching who have visited the page recently
- * - if the page doesn't exist, number of users that have the page on their watchlist
- * - 0 means there are no visiting watchers or their number is below the minimumWatchers
- * option (if passed).