fn get_decimal_256_array_slice(
array: &Decimal256Array,
indices: impl ExactSizeIterator<Item = usize>,
) -> Vec<FixedLenByteArray>fn get_decimal_256_array_slice(
array: &Decimal256Array,
indices: impl ExactSizeIterator<Item = usize>,
) -> Vec<FixedLenByteArray>