How to use the vedo.write function in vedo

def make_root_mesh(self):
        if self.structures is None:
            return

        obj_path = os.path.join(self.meshes_folder, "root.vtk")
        if os.path.isfile(obj_path):
            return

        # Get the mesh for each brain region to create root
        meshes = [
            self._get_structure_mesh(reg) for reg in self.region_acronyms
        ]
        root = merge(meshes)
        write(root, obj_path)

atlas_kwargs=dict(data_folder=self.data_folder),
        )

        temp_scene.add_neurons(self.neurons_names)
        temp_scene.render(interactive=False)
        temp_scene.close()

        root = merge(*temp_scene.actors["neurons"]).clean().cap()
        # root = mesh2Volume(root, spacing=(0.02, 0.02, 0.02)).isosurface()

        points = Points(root.points()).smoothMLS2D(f=0.8).clean(tol=0.005)

        root = recoSurface(points, dims=100, radius=0.2)

        # Save
        write(root, rootpath)

        del temp_scene
        return root