code: public <Type> Type finishLoading(final String assetPath, final Class<Type> assetClass) {
          return finishLoading(assetPath, assetClass, null);
      }
docs: Immediately loads the chosen asset. Schedules loading of the asset if it wasn't selected to be loaded already.
  
  @param assetPath internal path to the asset.
  @param assetClass class of the loaded asset.
  @return instance of the loaded asset.
  @param <Type> type of asset class to load.