Success! Final stack:
  [(Lean.Doc.Syntax.para
    "para{"
    [(Lean.Doc.Syntax.text
      (str
       "\"This is just some textual content. How is it?\""))]
    "}")
   (Lean.Doc.Syntax.para
    "para{"
    [(Lean.Doc.Syntax.text (str "\"More?\""))]
    "}")]
All input consumed.