Parameters:
theObject: :class:`mesh, sub-mesh, group or filter <SMESH.SMESH_IDSource>`
Mirror: :class:`SMESH.AxisStruct` or geom object (point, line, plane)
Parameters:
theObject: :class:`mesh, sub-mesh, group or filter <SMESH.SMESH_IDSource>`
Mirror: :class:`SMESH.AxisStruct` or geom object (point, line, plane)