More progress with buffers
diff --git a/model/pit/ndn-pit-entry.h b/model/pit/ndn-pit-entry.h
index ecec2a6..7f4ef0e 100644
--- a/model/pit/ndn-pit-entry.h
+++ b/model/pit/ndn-pit-entry.h
@@ -119,12 +119,21 @@
* This function will update PIT entry lifetime to the maximum of the current lifetime and
* the lifetime Simulator::Now () + offsetTime
*
- * @param offsetTime Relative time to the current moment, representing PIT entry lifetime
+ * @param lifetime Relative time to the current moment, representing PIT entry lifetime
*/
virtual void
- UpdateLifetime (const Time &offsetTime);
+ UpdateLifetime (const Time &lifetime);
/**
+ * @brief Offset the currently set PIT lifetime (allowed both negative and positive offsets)
+ * @param offsetTime positive or negative offset for the PIT lifetime.
+ *
+ * If PIT expire time becomes less than Simulator::Now, then it is adjusted to Simulator::Now.
+ */
+ virtual void
+ OffsetLifetime (const Time &offsetTime);
+
+ /**
* @brief Get prefix of the PIT entry
*/
const NameComponents &