diff --git a/dachlatten-datetime/src/main/kotlin/de/sipgate/dachlatten/datetime/DateExt.kt b/dachlatten-datetime/src/main/kotlin/de/sipgate/dachlatten/datetime/DateExt.kt
index 577ebff..bef4866 100644
--- a/dachlatten-datetime/src/main/kotlin/de/sipgate/dachlatten/datetime/DateExt.kt
+++ b/dachlatten-datetime/src/main/kotlin/de/sipgate/dachlatten/datetime/DateExt.kt
@@ -6,5 +6,8 @@ import java.time.LocalDateTime
 import java.util.Date
 import java.util.TimeZone
 
+/**
+ * Convenience converter from Java Date to the new DateTime API
+ */
 @RequiresApi(Build.VERSION_CODES.O)
 fun Date.toLocalDateTime(zone: TimeZone): LocalDateTime = LocalDateTime.ofInstant(toInstant(), zone.toZoneId())
diff --git a/dachlatten-datetime/src/main/kotlin/de/sipgate/dachlatten/datetime/FixedClock.kt b/dachlatten-datetime/src/main/kotlin/de/sipgate/dachlatten/datetime/FixedClock.kt
index 2983640..24ff119 100644
--- a/dachlatten-datetime/src/main/kotlin/de/sipgate/dachlatten/datetime/FixedClock.kt
+++ b/dachlatten-datetime/src/main/kotlin/de/sipgate/dachlatten/datetime/FixedClock.kt
@@ -3,6 +3,12 @@ package de.sipgate.dachlatten.datetime
 import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 
+/**
+ * Helper function to provide Clock instances providing fixed Instants
+ *
+ * This is useful for unit tests to inject Clocks that will always return a known value for `now()`.
+ */
+@Suppress("FunctionName")
 fun Clock.Companion.Fixed(instant: Instant) = object : Clock {
     override fun now(): Instant = instant
 }