{motive : Lean.Compiler.LCNF.JoinPointContextExtender.ExtendContext → Sort u} →
  (t : Lean.Compiler.LCNF.JoinPointContextExtender.ExtendContext) →
    ((currentJp? : Option Lean.FVarId) →
        (candidates : Lean.FVarIdSet) → motive { currentJp? := currentJp?, candidates := candidates }) →
      motive t