∀ {α : Type u_1} {β : Type u_2} [inst : TopologicalSpace α] [inst_1 : TopologicalSpace β] [inst_2 : Add β]
  [inst_3 : ContinuousAdd β], ContinuousMap.instAdd = { add := fun f g => { toFun := ⇑f + ⇑g, continuous_toFun := ⋯ } }