code: public void set(final T paramOrigin, final T paramDestination, final boolean paramBool) {
          assert paramOrigin != null;
          assert paramDestination != null;
          if (!mMap.containsKey(paramOrigin)) {
              mMap.put(paramOrigin, new IdentityHashMap<T, Boolean>());
          }
  
          mMap.get(paramOrigin).put(paramDestination, paramBool);
      }
docs: Sets the connection between a and b.
  
  @param paramOrigin
  origin object
  @param paramDestination
  destination object
  @param paramBool
  if connection is established or not