Convert lambda to method reference

Author: rock3r

app/src/main/java/net/squanchy/schedule/ScheduleService.kt

@@ -4,6 +4,7 @@ import io.reactivex.Observable
 import io.reactivex.Scheduler
 import io.reactivex.functions.BiFunction
 import io.reactivex.schedulers.Schedulers
+import net.squanchy.schedule.domain.view.Event
 import net.squanchy.schedule.domain.view.Schedule
 import net.squanchy.schedule.domain.view.SchedulePage
 import net.squanchy.schedule.domain.view.Track
@@ -102,6 +103,6 @@ class FirestoreScheduleService(
             day.id,
             LocalDate(day.date, timeZone),
             events.map { it.toEvent(checksum, timeZone) }
-                .sortedWith(compareBy({ it.startTime }, { it.place.orNull()?.position ?: -1 }))
+                .sortedWith(compareBy(Event::startTime, { it.place.orNull()?.position ?: -1 }))
         )
 }