Hi.I have a problem with saving texture coordinates in obj file.I am using Python version of OpenMesh for manipulating with texture coordinates in 3D mesh stored in obj file. I save the result mesh using method write_mesh.When I open the resultant obj file there is no texture coordinates information, only list of vertices and faces.The same happens if I read the mesh from obj file. What could be the problem? Thanks.Kind regards,Vladimir Privalov