Complete Qt6/rtiddsgen migration of residual Lts service sources

qt6-after/qt6-migrated-legatus/Lts/DDS/DTC/generic_dtc_impl.h

@@ -111,6 +111,17 @@ class GenericDtcImplSubscriberTemplate : public DDSGeneric::SubscriberListenerCa
         return ret;
     }
 
+    bool readAlive(TopicTypeRead& data) override final
+    {
+        auto samples = readAlive();
+        if (samples.length() > 0)
+        {
+            data = samples[0].data();
+            return true;
+        }
+        return false;
+    }
+
     dds::sub::LoanedSamples<TopicTypeRead> takeAlive() const override final
     {
         if (!m_dataReaderObject)
@@ -124,6 +135,17 @@ class GenericDtcImplSubscriberTemplate : public DDSGeneric::SubscriberListenerCa
         return ret;
     }
 
+    bool takeAlive(TopicTypeRead& data) override final
+    {
+        auto samples = takeAlive();
+        if (samples.length() > 0)
+        {
+            data = samples[0].data();
+            return true;
+        }
+        return false;
+    }
+
     dds::sub::LoanedSamples<TopicTypeRead> takeDisposed() const override final
     {
         if (!m_dataReaderObject)
@@ -132,6 +154,17 @@ class GenericDtcImplSubscriberTemplate : public DDSGeneric::SubscriberListenerCa
         return m_dataReaderObject->takeDisposed();
     }
 
+    bool takeDisposed(TopicTypeRead& data) override final
+    {
+        auto samples = takeDisposed();
+        if (samples.length() > 0)
+        {
+            data = samples[0].data();
+            return true;
+        }
+        return false;
+    }
+
     bool hasSamples() const override final
     {
         if (!m_dataReaderObject)