Returns a join that pairs each element from the first collection with a matching element from the second collection. The first match is added to the result as an additional property.
ee.Join.saveFirst(matchKey, ordering, ascending, measureKey, outer)
|String||The property name used to save the match.|
|String, default: null||The property on which to sort the matches before selecting the first.|
|Boolean, default: true||Whether the ordering is ascending.|
|String, default: null||An optional property name used to save the measure of the join condition on the match.|
|Boolean, default: false||If true, primary rows without matches will be included in the result.|