java 8: Convert a long array to String array

//Convert a primitive long[] to String[]
long[] pla = {1155L, 22334L, 559876L};

String[] spla = Arrays.stream(pla)
              .mapToObj(String :: valueOf)
              .toArray(String[] :: new);

//Convert a boxed Long[] to String[]
Long[] bla = LongStream.of(pla)
               .boxed().toArray(Long[] :: new);

String[] sbla = Arrays.stream(bla)
               .mapToLong(Long::longValue)
               .mapToObj(String::valueOf)
               .toArray(String[] :: new);

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