ParaView GenericGeometry Filter
The Generic Geometry filter works on GenericDataSet objects. GenericDataSet is an abstract class. It is usually used for unstructured grids with higher order elements. The reader must return a GenericDataSet object for this option to become available. The Generic Geometry filter extracts geometry, such as boundary faces and line, from GenericDataSet objects.
This filter does not appear to be available in ParaView 3.2.1.