[PL/TRM] Adapted to moved cell averaging code

ProcessLib/ThermoRichardsMechanics/ThermoRichardsMechanicsProcess.cpp

@@ -18,6 +18,7 @@
 #include "MeshLib/Utils/getOrCreateMeshProperty.h"
 #include "NumLib/DOF/DOFTableUtil.h"
 #include "ProcessLib/Deformation/SolidMaterialInternalToSecondaryVariables.h"
+#include "ProcessLib/Output/CellAverageAlgorithm.h"
 #include "ProcessLib/Process.h"
 #include "ProcessLib/Reflection/ReflectionForExtrapolation.h"
 #include "ProcessLib/Reflection/ReflectionForIPWriters.h"
@@ -287,8 +288,7 @@ void ThermoRichardsMechanicsProcess<DisplacementDim, ConstitutiveTraits>::
         pv.getActiveElementIDs(), getDOFTables(x.size()), t, dt, x, x_prev,
         process_id);
 
-    cell_average_data_.computeSecondaryVariable(DisplacementDim,
-                                                local_assemblers_);
+    computeCellAverages(cell_average_data_, DisplacementDim, local_assemblers_);
 }
 
 template <int DisplacementDim, typename ConstitutiveTraits>