code: public boolean hasTransitionTo(CharRange condition, NFAState<T> state)
      {
          Set<Transition<NFAState<T>>> set = transitions.get(condition);
          if (set != null)
          {
              for (Transition<NFAState<T>> tr : set)
              {
                  if (state.equals(tr.getTo()))
                  {
                      return true;
                  }
              }
          }
          return false;
      }
docs: Returns true if transition with condition to state exists
  @param condition
  @param state
  @return