{X : AlgebraicGeometry.Scheme} →
  (I : X.IdealSheafData) →
    (U : ↑X.affineOpens) →
      I.glueDataObj U ≅ ↑((TopologicalSpace.Opens.map (AlgebraicGeometry.Scheme.IdealSheafData.gluedTo✝ I).base).obj ↑U)