How can I reset all custom properties into a "Redo Panel"?

Archive Python API
1

I have a “Redo Panel” with some custom properties and an operator at the end, from which I want to reset all custom properties at their default values. How can I do that?

Here is an example of my code:

class FU3DM_OT_ModelPrefs(bpy.types.Operator):
    bl_idname = "fu3dm.model_prefs"
    bl_label = "Model"
    bl_description = "Blah blah blah"
    bl_options = {'REGISTER','UNDO'}

    gender : bpy.props.EnumProperty(name="Gender", description="Choose model's gender", items= [('OP1', "Male", ""), ('OP2', "Female", "")], default='OP1')
    head_male : bpy.props.EnumProperty(name="Head", description="Choose model's head", items= [('OP1', "Generic Male", ""), ('OP2', "Male", "")], default='OP2')
    head_female : bpy.props.EnumProperty(name="Head", description="Choose model's head", items= [('OP1', "Generic Female", ""), ('OP2', "Female", "")], default='OP2')
    eyes_color : bpy.props.IntProperty(name="Eyes Color", description="Choose model's eyes color", min=1, max=10, default=1)
    skin_color : bpy.props.IntProperty(name="Skin Color", description="Choose model's skin color", min=1, max=10, default=1)
    models_show : bpy.props.BoolProperty(name="Show Model", description="Show or hide models", default=1)

    class FU3DM_OT_ResetAll(bpy.types.Operator):
        bl_idname = "fu3dm.reset_all"
        bl_label = "Reset"
        bl_description = "Blah blah blah"
        bl_options = {'REGISTER', 'UNDO'}

        def execute(self, context):
            # ???
            return {"FINISHED"}

    def draw(self, context):
        layout = self.layout
        # ...
        row = layout.row()
        row.operator('fu3dm.reset_all')
        # ...

    def execute(self, context):
        # ...
        return {"FINISHED"}