[flux][mpfa] Add possibility to add submethod for some type of mpfa schemes

dumux/common/properties.hh

@@ -130,7 +130,8 @@ template<class TypeTag, class MyTypeTag>
 struct SecondaryInteractionVolume { using type = UndefinedProperty; };          //!< The secondary interaction volume type used e.g. on the boundaries
 template<class TypeTag, class MyTypeTag>
 struct DualGridNodalIndexSet { using type = UndefinedProperty; };               //!< The type used for the nodal index sets of the dual grid
-
+template<class TypeTag, class MyTypeTag>
+struct DiscretizationSubmethod { using type = UndefinedProperty; };             //!< The type used for an mpfa submethod belonging to a specific family of schemes
 /////////////////////////////////////////////////////////////
 // Properties used by models involving flow in porous media:
 /////////////////////////////////////////////////////////////

dumux/discretization/ccwmpfa.hh

@@ -117,9 +117,6 @@ struct ElementBoundaryTypes<TypeTag, TTag::CCWMpfaModel> { using type = CCElemen
 template<class TypeTag>
 struct BaseLocalResidual<TypeTag, TTag::CCWMpfaModel> { using type = CCLocalResidual<TypeTag>; };
 
-template<class TypeTag, class MyTypeTag>
-struct DiscretizationSubmethod { using type = UndefinedProperty; };
-
 template<class TypeTag>
 struct DiscretizationSubmethod<TypeTag, TTag::CCWMpfaModel> { static constexpr WMpfaMethod value = WMpfaMethod::avgmpfa; };
 } // namespace Properties