(motive : Option Lean.ProjectionFunctionInfo → Sort u_1) →
  (__discr : Option Lean.ProjectionFunctionInfo) →
    ((ctorName : Lean.Name) →
        (numParams i : ℕ) → motive (some { ctorName := ctorName, numParams := numParams, i := i, fromClass := true })) →
      ((x : Option Lean.ProjectionFunctionInfo) → motive x) → motive __discr