MultipleCodimMultipleGeomTypeMapper: replace layout class providing `contains()` with function object
MultipleCodimMultipleGeomTypeMapper has a template template parameter
Layout<gridDim>. This only has to provide a single method
bool contains(GeometryType) const.
It would be nice if it was replace with a (template) function object taking both grid dimension and geometry type as arguments and returning a boolean. This would still provide the same flexibility as the current implementation, but would allow use of using lambda expressions or
std::function instead of having to write a full class.