∀ {H : Type u} {M : Type u_2} [inst : TopologicalSpace H] [inst_1 : TopologicalSpace M] [inst_2 : ChartedSpace H M]
  {e : OpenPartialHomeomorph M H},
  e ∈ atlas H M →
    ∀ {s : TopologicalSpace.Opens M} (hs : Nonempty ↥s) {G : StructureGroupoid H} [HasGroupoid M G]
      [ClosedUnderRestriction G], e.subtypeRestr hs ∈ StructureGroupoid.maximalAtlas (↥s) G