∀ {α : Type u_1} {β : Type u_2} [inst : TopologicalSpace α] [inst_1 : TopologicalSpace β] [inst_2 : AddGroup β]
  [inst_3 : IsTopologicalAddGroup β],
  ContinuousMap.instAddGroupOfIsTopologicalAddGroup = ContinuousMap.instAddGroupOfIsTopologicalAddGroup