Is there a method to set proxy for the underlying guzzle client?

[sourcefrom]

Hi,

I am just starting to play around with the sdk, and there is a need to use a vpn proxy for making telegram api requests. I looked at the facade and there seems to be no easy way to configure such a vpn proxy to the underlying guzzle client. If there is a way, I'd appreciate a quick pointer. If not, perhaps this can be a convenience feature added to the telegram.config?

Much appreciated!
Jay