code: public IConceptMap<IConceptSet> getNewSubsumptions() {
          IConceptMap<IConceptSet> res = new DenseConceptMap<IConceptSet>(
                  newContexts.size());
          // Collect subsumptions from new contexts
          for (Context ctx : newContexts) {
              res.put(ctx.getConcept(), ctx.getS());
          }
          return res;
      }
docs: Returns the subsumptions for the new concepts added in an incremental
  classification.
  
  @return