private ImmutableMap < C , V > mapContentToValues ( final ImmutableMap < K , V > base ) { final ImmutableMap . Builder < C , V > builder = ImmutableMap . builder ( ) ; for ( final Entry < K , V > entry : base . entrySet ( ) ) { builder . put ( this . key ( entry . getKey ( ) ) , entry . getValue ( ) ) ; } return builder . build ( ) ; }
Maps the content of the base map to its values .