Protein.append_atoms: def of bend-prot@0.1.0.0
Import: import bend-prot@0.1.0.0/protein.bend as Protein
Lines 103-108 of bend-prot@0.1.0.0/protein.bend: https://jend.leeeet.dev/read.txt?path=bend-prot@0.1.0.0/protein.bend&start_line=103&end_line=108

import Base

def append_atoms(xs: List<&2, Atom>, ys: List<&2, Atom>) -> List<&2, Atom>:
  match xs:
    case Nil{}:
      ys
    case h <> t:
      h <> append_atoms(t, ys)

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=bend-prot@0.1.0.0/protein.bend&name=Atom