question: @ SuppressWarnings ( "unchecked" ) public LiteralExtensionIV createIV ( final Value value ) { if ( value instanceof Literal == false ) throw new IllegalArgumentException ( ) ; final Literal lit = ( Literal ) value ; final AbstractLiteralIV delegate = new PackedLongIV ( Long . parseLong ( lit . getLabel ( ) ) ) ; return new LiteralExtensionIV ( delegate , datatype . getIV ( ) ) ; }
target:  Convert the supplied value into an internal representation as PackedLongIV.