def revoke(access_token)
      response = client.as(access_token).post(path: "/oauth/revoke")
      response.code == 200 && response.empty?
    end
def revoke(access_token)
      response = client.as(access_token).post(path: "/oauth/revoke")
      response.code == 200 && response.empty?
    end
Revokes access to the Nylas API for the given access token
 @return [Boolean]