How do you combine Lombok's @Builder with inheritance?

Plain @Builder doesn't naturally handle a subclass adding its own fields on top of a parent class's builder — by default, each class's @Builder only knows about that class's own fields. Lombok's @SuperBuilder annotation exists specifically to solve this, generating a builder that's aware of, and can be extended by, subclasses.

@SuperBuilder
public class Vehicle {
    protected String make;
}

@SuperBuilder
public class Car extends Vehicle {
    private int doors;
}

Car c = Car.builder()
    .make("Toyota")   //  inherited from Vehicle's builder
    .doors(4)
    .build();

Both the parent and every subclass in the hierarchy need @SuperBuilder (not the plain @Builder) for this chaining to work correctly — mixing plain @Builder on a parent with @SuperBuilder on a child (or vice versa) doesn't work, since they generate incompatible builder implementations.

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