pub fn make_classification(
n_samples: usize,
n_features: usize,
n_classes: usize,
n_informative: Option<usize>,
n_redundant: Option<usize>,
flip_y: f64,
class_sep: f64,
random_state: Option<u64>,
) -> UtilsResult<(Array2<f64>, Array1<i32>)>