{"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"GenericArgKind::Const(val)"}]}
                GenericArgKind::Const(val) => {
                GenericArgKind::Type(ty) => self.add_constraints_from_ty(current, ty, variance_i),
                    self.add_constraints_from_const(current, val, variance)