pub fn conditional_copy_datetime64(
mask: &BooleanArray<()>,
then_data: &[i64],
else_data: &[i64],
time_unit: TimeUnit,
) -> DatetimeArray<i64>pub fn conditional_copy_datetime64(
mask: &BooleanArray<()>,
then_data: &[i64],
else_data: &[i64],
time_unit: TimeUnit,
) -> DatetimeArray<i64>