def revoke_token
      r = HTTP.auth('Bearer ' + @access_token).post(API + '/auth/token/revoke')
      raise ApiError.new(r) if r.code != 200
    end
def revoke_token
      r = HTTP.auth('Bearer ' + @access_token).post(API + '/auth/token/revoke')
      raise ApiError.new(r) if r.code != 200
    end
@param [String] access_token
 Disable the access token used to authenticate the call.

 @return [void]