[Python] Using Proxies with Selenium / add_to_capabilities error?

I am using Selenium with proxies a long time with the following code:

import os
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.proxy import Proxy, ProxyType
from selenium.webdriver.support.ui import WebDriverWait

print(f"Checking Browser driver...")
os.environ['WDM_LOG'] = '0'
options = Options()
options.add_argument("start-maximized")
options.add_experimental_option("prefs", {"profile.default_content_setting_values.notifications": 1})
options.add_experimental_option("excludeSwitches", ["enable-automation"])
options.add_experimental_option('excludeSwitches', ['enable-logging'])
options.add_experimental_option('useAutomationExtension', False)
options.add_argument('--disable-blink-features=AutomationControlled')
srv=Service()

HOSTNAME = "196.247.168.34"
PORT = "12345"
prox = Proxy()
prox.proxy_type = ProxyType.MANUAL
prox.http_proxy = prox.ssl_proxy = f"{HOSTNAME}:{PORT}"
capabilities = webdriver.DesiredCapabilities.CHROME
prox.add_to_capabilities(capabilities)
driver = webdriver.Chrome (service=srv, options=options, desired_capabilities=capabilities)
waitWD = WebDriverWait (driver, 5)
driver.get ("https://whatismyipaddress.com/")
input("Press!")#


But now i get this error when running the code:

(selenium) C:\DEVNEU\Python-Diverses\Selenium>python test.py
Checking Browser driver...
Traceback (most recent call last):
File "C:\DEVNEU\Python-Diverses\Selenium\test.py", line 25, in <module>
prox.add_to_capabilities(capabilities)
^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'Proxy' object has no attribute 'add_to_capabilities'. Did you mean: 'to_capabilities'?


Its an authenticated proxy with username and password - so i can´t simply use this in the options

options.add_argument(f"--proxy-server={proxy}")


How can i use my authenticated proxy with selenium without using any other additonal libraries like seleniumbase or seleniumwire?

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