{"textDocument": {"uri": "file:///tryThisCodeAction.lean"},
 "range":
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 "context": {"diagnostics": []}}
[{"title": "Try this: simp only",
  "kind": "quickfix",
  "isPreferred": true,
  "edit":
  {"documentChanges":
   [{"textDocument": {"version": 1, "uri": "file:///tryThisCodeAction.lean"},
     "edits":
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       {"start": {"line": 0, "character": 21},
        "end": {"line": 0, "character": 26}},
       "newText": "simp only"}]}]}}]