code: public static void assertServerInNormalState(AdminClient adminClient,
                                                   Collection<Integer> nodeIds) {
          assertServerState(adminClient, nodeIds, VoldemortState.NORMAL_SERVER, true);
      }
docs: Utility function that checks the execution state of the server by
  checking the state of {@link VoldemortState} <br>
  
  This function checks if the nodes are in normal state (
  {@link VoldemortState#NORMAL_SERVER}).
  
  @param adminClient An instance of AdminClient points to given cluster
  @param nodeIds List of node ids to be checked
  @throws VoldemortException if any node is not in normal state