Yandex SDK signals

Godot Version

3.5.3

Question

Hello!
I have a very simple 2D game with a single Control-based scene.
I added the “Yandex SDK” addon to the project, which sends some signals from its script.
q2

How can I accept them in my single script without creating additional nodes?
I don’t understand how my script interacts with the addon script, although I have read a lot of documentation on this issue. They advise get_node(node_name) etc, for example:
get_node(“res://addons/yandex_sdk/yandex_sdk.gd”).connect(“data_loaded”,self,“_on_ctrl_data_loaded”)
But I get an error:
"get_node: (Node not found: “res://addons/yandex_sdk/yandex_sdk.gd” (relative to “/root/Control”).)
Any help is welcome.

Hierarchy
q1

sorry, my bad )) simple get_node was need change to
YandexSDK.connect("data_loaded",self,"_on_ctrl_data_loaded")