∀ {α : Type u_1} [inst : DecidableEq α] [inst_1 : Fintype α] {g : Equiv.Perm α} [inst_2 : SizeOf α]
  (toFun : ↥g.cycleFactorsFinset → α) (mem_support_self' : ∀ (c : ↥g.cycleFactorsFinset), toFun c ∈ (↑c).support),
  sizeOf { toFun := toFun, mem_support_self' := mem_support_self' } = 1