Properties using Builder interface should have the type: Builder<? extends Type>

[Adrodoc]

For example, the generated builder for the following pojo is not correct:

@GeneratePojoBuilder(withBuilderInterface = Builder.class, withBuilderProperties = true)
public class Pojo {
  public Number value;
}

The builder-with-method "withValue" should have the following signature:
public PojoBuilder withValue(Builder<? extends Number> value)

but has:
public PojoBuilder withValue(Builder<Number> value)