When I tried dash-vtk with OBJ reader, I failed to find a api for MTL upload

Dash Python
1

When I tried dash-vtk with OBJ reader, I failed to find a api for MTL upload

txt_content = None
with open(obj_file, 'r') as file:
  txt_content = file.read()

content = dash_vtk.View([
    dash_vtk.GeometryRepresentation([
        dash_vtk.Reader(
            vtkClass="vtkOBJReader",
            parseAsText=txt_content,
        ),
    ]),
])
2

Till now,No answer yet。。。。。。。。。。。