toLongArray
Returns a new long array containing all the bits in this bit set.
More precisely, if long[] longs = s.toLongArray();
then longs.length == (s.length()+63)/64 and s.get(n) == ((longs[n/64] & (1L<<(n%64))) != 0)
for all n < 64 * longs.length.
Return
a long array containing a little-endian representation of all the bits in this bit set
Since
1.7