code: protected boolean isCorrelated(CorrelationIdentifier cid) {
          for (CorrelationIdentifier id : correlationIds) {
              if (id.equals(cid)) {
                  return true;
              }
          }
          return false;
      }
docs: This method determines whether the node is correlated to the supplied
  identifier.
  
  @param cid The correlation id
  @return Whether the node is correlated to the supplied id