docs: def revoke(self):
          """LeaseRevoke revokes a lease.
  
          All keys attached to the lease will expire and be deleted.
          This method makes a synchronous HTTP request by default. To make an
          asynchronous HTTP request, please define a `callback` function
          to be invoked when receiving the response.
  
          :return:
          """
          self.client.post(self.client.get_url("/kv/lease/revoke"),
                           json={"ID": self.id})
          return True