code: public Map relevantCycles() {
          Map result = new HashMap();
          //minimize();
  
          for (SimpleCycleBasis subgraphBase : subgraphBases) {
              SimpleCycleBasis cycleBasis = subgraphBase;
              result.putAll(cycleBasis.relevantCycles());
          }
  
          return result;
      }
docs: Returns the essential cycles of this cycle basis.
  A relevant cycle is contained in some minimum cycle basis of a graph.
  
  @return a <Code>Map</code> mapping each relevant cycles to the corresponding
  basis cycle in this basis