UILayout.panel and UILayout.panel_prop are missing return value

[Andrej730]

Documentation has return values for those methods - https://docs.blender.org/api/current/bpy.types.UILayout.html#bpy.types.UILayout.panel

But typing is missing them, see the snippet below.

import bpy
from typing import assert_type

class NewLayoutPanel(bpy.types.Panel):
    def draw(self, context):
        assert context
        scene = context.scene
        layout = self.layout

        header, panel = layout.panel_prop(scene, "use_extra_user")
        # "assert_type" mismatch: expected "UILayout" but received "Unknown"
        assert_type(header, bpy.types.UILayout)
        # "assert_type" mismatch: expected "UILayout | None" but received "Unknown"
        assert_type(panel, bpy.types.UILayout | None)
        header, panel = layout.panel("bridges", default_closed=True)
        # "assert_type" mismatch: expected "UILayout" but received "Unknown"
        assert_type(header, bpy.types.UILayout)
        # "assert_type" mismatch: expected "UILayout | None" but received "Unknown"
        assert_type(panel, bpy.types.UILayout | None)