pub type Quad<T, B, L> = Quad<Id<T, B>, Id<T, B>, Term<Id<T, B>, L>>;Aliased Type§
pub struct Quad<T, B, L>(pub Id<T, B>, pub Id<T, B>, pub Term<Id<T, B>, L>, pub Option<Id<T, B>>);Tuple Fields§
§0: Id<T, B>§1: Id<T, B>§2: Term<Id<T, B>, L>§3: Option<Id<T, B>>