question: @ SuppressWarnings ( "unchecked" ) public static < T > T [ ] appendElement ( Class < T > kind , T [ ] array , T element ) { final T [ ] result ; final int end ; if ( array != null ) { end = array . length ; result = ( T [ ] ) Array . newInstance ( kind , end + 1 ) ; System . arraycopy ( array , 0 , result , 0 , end ) ; } else { end = 0 ; result = ( T [ ] ) Array . newInstance ( kind , 1 ) ; } result [ end ] = element ; return result ; }
target:  Appends an element to a copy of the array and returns the copy.