code: public void removeEMF(String applicationToken)
      {
          if (emfMap != null)
          {
              EntityManagerFactory emf = emfMap.get(applicationToken);
              if (emf != null)
              {
                  emf.close();
              }
              emfMap.remove(applicationToken);
          }
      }
docs: Removes EMF
  
  @param applicationToken