Restsharp: Removing Rest Request Headers

Is there a way by which I can remove the header value from RestSharp request.
Ex. I have added token in the request header and after request execution realized that, token is expired. I wanted to apply regenerated to token to request. If I simply add it using AddHeader, it creates a new parameter entry with same name, and does not override the earlier one.

Looking for a way where either i can remove and add or update header.

If this is not supported,
1) one can enumerate the parameters and find a parameter by parameter type and name
2) once found, remove it from Parameters list (using List.Remove)
3) Then, add it again

I can generate PR by exposing the method. Please suggest if this is good to have feature in the library.

Thanks
Nilesh