Success! Final stack:
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         "`"
         (str "\"inductive\"")
         "`")
        (Lean.Doc.Syntax.text
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             "]"
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              "("
              (str
               "\"https://github.com/leanprover/lean4/pull/5842\"")
              ")"))
            (Lean.Doc.Syntax.text
             (str "\" and \""))
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             [(Lean.Doc.Syntax.text
               (str "\"#5783\""))]
             "]"
             (Lean.Doc.Syntax.url
              "("
              (str
               "\"https://github.com/leanprover/lean4/pull/5783\"")
              ")"))
            (Lean.Doc.Syntax.text
             (str
              "\" implement a feature where the \""))
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             "`")
            (Lean.Doc.Syntax.text
             (str
              "\" command can now define recursive inductive types:\""))]
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          (Lean.Doc.Syntax.codeblock
           "```"
           [`lean []]
           "\n"
           (str
            "\"structure Tree where\\n  n : Nat\\n  children : Fin n → Tree\\n\\ndef Tree.size : Tree → Nat\\n  | {n, children} => Id.run do\\n    let mut s := 0\\n    for h : i in [0 : n] do\\n      s := s + (children ⟨i, h.2⟩).size\\n    pure s\\n\"")
           "```")])
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   "}")
All input consumed.