/// Calling `predict` on an unfitted `LinearRegression` must be a compile error.
/// `LinearRegression` implements `Fit` but NOT `Predict`.
useferrolearn_core::Predict;useferrolearn_linear::LinearRegression;usendarray::Array2;fnmain(){let model =LinearRegression::<f64>::new();let x =Array2::<f64>::zeros((3,2));// This should fail: LinearRegression doesn't implement Predict
let_= model.predict(&x);}