def sum_count_extend_go
import bend-prot@0.1.0.0/protein.bend as Proteinimport Base
import bend-prot@0.1.0.0/geom.bend as G
58def sum_count_extend_go(pos: G.Vec3, rest: G.Vec3 & Nat) -> G.Vec3 & Nat:
59 match rest:
60 case (rest_sum, rest_n):
61 (G.Vec3.add(pos, rest_sum), 1n+rest_n)