[OpenMesh] Issue with saving texture coordinates in obj file

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