code: def omerc2cf(area):
      
      proj_dict = area.proj_dict
  
      args = dict(azimuth_of_central_line=proj_dict.get('alpha'),
                  latitude_of_projection_origin=proj_dict.get('lat_0'),
                  longitude_of_projection_origin=proj_dict.get('lonc'),
                  grid_mapping_name='oblique_mercator',
                  reference_ellipsoid_name=proj_dict.get('ellps', 'WGS84'),
                  false_easting=0.,
                  false_northing=0.
                  )
      if "no_rot" in proj_dict:
          args['no_rotation'] = 1
      if "gamma" in proj_dict:
          args['gamma'] = proj_dict['gamma']
      return args
docs: Return the cf grid mapping for the omerc projection.