Construction

There are two and a half ways to instantiate a struct in FieldX:

1. By using its default

   • by using its new method, which is just syntax sugar around the Default trait under the hood. If you don't want the implicit new method then just do:

     #[fxstruct(new(off))]

2. By using the builder pattern.

Since there is nothing more to be added about the new()/default(), let's focus on the builder pattern.