How to use the meshio.vtk.write function in meshio

def writer(*args, **kwargs):
        return meshio.vtk.write(*args, binary=binary, **kwargs)

    "VTK (ASCII)": (lambda f, m: meshio.vtk.write(f, m, binary=False), ["out.vtk"]),
    "Gmsh 4.1 (binary)": (

            lambda f, m: meshio.vtk.write(f, m, binary=True),
            meshio.vtk.read,

    "VTK (binary)": (lambda f, m: meshio.vtk.write(f, m, binary=True), ["out.vtk"]),
    "VTK (ASCII)": (lambda f, m: meshio.vtk.write(f, m, binary=False), ["out.vtk"]),

elif fmt == "h5m":
        h5m.write(
            args.infile, mesh, compression="gzip", compression_opts=9 if args.max else 4
        )
    elif fmt == "mdpa":
        mdpa.write(args.infile, mesh, binary=True)
    elif fmt == "med":
        med.write(
            args.infile, mesh, compression="gzip", compression_opts=9 if args.max else 4
        )
    elif fmt == "ply":
        ply.write(args.infile, mesh, binary=True)
    elif fmt == "stl":
        stl.write(args.infile, mesh, binary=True)
    elif fmt == "vtk":
        vtk.write(args.infile, mesh, binary=True)
    elif fmt == "vtu":
        vtu.write(
            args.infile, mesh, binary=True, compression="lzma" if args.max else "zlib"
        )
    elif fmt == "xdmf":
        xdmf.write(
            args.infile,
            mesh,
            data_format="HDF",
            compression="gzip",
            compression_opts=9 if args.max else 4,
        )
    else:
        print("Don't know how to compress {}.".format(args.infile))
        exit(1)

# write it out
    if fmt == "ansys":
        ansys.write(args.infile, mesh, binary=False)
    elif fmt == "flac3d":
        flac3d.write(args.infile, mesh, binary=False)
    elif fmt == "gmsh":
        gmsh.write(args.infile, mesh, binary=False)
    elif fmt == "mdpa":
        mdpa.write(args.infile, mesh, binary=False)
    elif fmt == "ply":
        ply.write(args.infile, mesh, binary=False)
    elif fmt == "stl":
        stl.write(args.infile, mesh, binary=False)
    elif fmt == "vtk":
        vtk.write(args.infile, mesh, binary=False)
    elif fmt == "vtu":
        vtu.write(args.infile, mesh, binary=False)
    elif fmt == "xdmf":
        xdmf.write(args.infile, mesh, data_format="XML")
    else:
        print("Don't know how to convert {} to ASCII format.".format(args.infile))
        exit(1)

    size = os.stat(args.infile).st_size
    print("File size after:  {:.2f} MB".format(size / 1024 ** 2))

# write it out
    if fmt == "ansys":
        ansys.write(args.infile, mesh, binary=True)
    elif fmt == "flac3d":
        flac3d.write(args.infile, mesh, binary=True)
    elif fmt == "gmsh":
        gmsh.write(args.infile, mesh, binary=True)
    elif fmt == "mdpa":
        mdpa.write(args.infile, mesh, binary=True)
    elif fmt == "ply":
        ply.write(args.infile, mesh, binary=True)
    elif fmt == "stl":
        stl.write(args.infile, mesh, binary=True)
    elif fmt == "vtk":
        vtk.write(args.infile, mesh, binary=True)
    elif fmt == "vtu":
        vtu.write(args.infile, mesh, binary=True)
    elif fmt == "xdmf":
        xdmf.write(args.infile, mesh, data_format="HDF")
    else:
        print("Don't know how to convert {} to binary format.".format(args.infile))
        exit(1)

    size = os.stat(args.infile).st_size
    print("File size after:  {:.2f} MB".format(size / 1024 ** 2))