script does not appears in Gimp3 filters

Code:
#!/usr/bin/env python3

# -*- coding: utf-8 -*-



import gi

gi.require_version('Gimp', '3.0')

from gi.repository import Gimp

from gi.repository import GLib

import sys



def N_(message): return message

def _(message): return GLib.dgettext(None, message)



class MinimalTest (Gimp.PlugIn):

    def do_query_procedures(self):

        return [ "plug-in-minimal-test" ]



    def do_create_procedure(self, name):

        procedure = Gimp.ImageProcedure.new(self, name,

                                            Gimp.PDBProcType.PLUGIN,

                                            self.run, None)

        procedure.set_image_types("*")

        procedure.set_menu_label(_("Minimal Python 3 Test"))

        procedure.add_menu_path('<Image>/Filters/Development/My Minimal Tests/')

        procedure.set_documentation(_("A very minimal test for Python 3 plugins."),

                                    _("A very minimal test for Python 3 plugins."),

                                    name)

        procedure.set_attribution("Your Name", "Your Name", "2025")

        return procedure



    def run(self, procedure, run_mode, image, drawables, config, run_data):

        Gimp.message("Minimal Python 3 Test Loaded Successfully!")

        return procedure.new_return_values(Gimp.PDBStatusType.SUCCESS, GLib.Error())



Gimp.main(MinimalTest.get_type(), sys.argv)