code: private void getStrings(HashSet<String> strHashSet, SearchCondition searchCondition, String searchConditionString, String prefixString, SimpleMDAGNode node)
      {
          int transitionSetBegin = node.getTransitionSetBeginIndex();
          int onePastTransitionSetEnd = transitionSetBegin + node.getOutgoingTransitionSetSize();
  
          //Traverse all the valid _transition paths beginning from each _transition in transitionTreeMap, inserting the
          //corresponding Strings in to strHashSet that have the relationship with conditionString denoted by searchCondition
          for (int i = transitionSetBegin; i < onePastTransitionSetEnd; i++)
          {
              SimpleMDAGNode currentNode = mdagDataArray[i];
              String newPrefixString = prefixString + currentNode.getLetter();
  
              if (currentNode.isAcceptNode() && searchCondition.satisfiesCondition(newPrefixString, searchConditionString))
                  strHashSet.add(newPrefixString);
  
              //Recursively call this to traverse all the valid _transition paths from currentNode
              getStrings(strHashSet, searchCondition, searchConditionString, newPrefixString, currentNode);
          }
          /////
      }
docs: Retrieves Strings corresponding to all valid _transition paths from a given node that satisfy a given condition.
  
  @param strHashSet              a HashSet of Strings to contain all those in the MDAG satisfying
  {@code searchCondition} with {@code conditionString}
  @param searchCondition         the SearchCondition enum field describing the type of relationship that Strings contained in the MDAG
  must have with {@code conditionString} in order to be included in the result set
  @param searchConditionString   the String that all Strings in the MDAG must be related with in the fashion denoted
  by {@code searchCondition} in order to be included in the result set
  @param prefixString            the String corresponding to the currently traversed _transition path
  @param node                    an int denoting the starting index of a SimpleMDAGNode's _transition set in mdagDataArray