feature #19913 [Stopwatch] Add getLastPeriodà method to StopwatchEvent` (alamirault)

This PR was merged into the 7.2 branch.

Discussion
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[Stopwatch] Add `getLastPeriodà method to `StopwatchEvent`

Fix #19906

Commits
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6331dc5 [Stopwatch] Add getLastPeriod method to StopwatchEvent

Author: OskarStark

performance.rst

@@ -362,6 +362,13 @@ method does, which stops an event and then restarts it immediately::
     // Lap information is stored as "periods" within the event:
     // $event->getPeriods();
 
+    // Gets the last event period:
+    // $event->getLastPeriod();
+
+.. versionadded:: 7.2
+
+    The ``getLastPeriod`` method was introduced in Symfony 7.2.
+
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