Function refresh_token_route 

pub(crate) async fn refresh_token_route(
    __arg0: State<State>,
    __arg1: ClientIp,
    body: Args<Request>,
) -> Result<Response>

POST /_matrix/client/v3/refresh

Refresh an access token.

https://spec.matrix.org/v1.15/client-server-api/#post_matrixclientv3refresh