question: public String append ( String superResource , String subResource ) { if ( superResource . endsWith ( delimiter ) && subResource . startsWith ( delimiter ) ) { superResource = superResource . substring ( 0 , superResource . length ( ) - 1 ) ; } if ( ! superResource . endsWith ( delimiter ) && ! subResource . startsWith ( delimiter ) ) { subResource = delimiter + subResource ; } return superResource + subResource ; }
target:  Appends sub-resource to super-resource.