∀ {B : Type u_3} {F : Type u_2} {Z : Type u_4} [inst : TopologicalSpace B] [inst_1 : TopologicalSpace F] {proj : Z → B}
  [inst_2 : TopologicalSpace Z] (e : Bundle.Trivialization F proj) {Z' : Type u_1} [inst_3 : TopologicalSpace Z']
  (h : Z' ≃ₜ Z), (h.transOpenPartialHomeomorph e.toOpenPartialHomeomorph).source = proj ∘ ⇑h ⁻¹' e.baseSet