{"textDocument": {"uri": "file:///completionOpenNamespaces.lean"},
 "position": {"line": 4, "character": 68}}
{"items":
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   "kind": 21,
   "data":
   ["file:///completionOpenNamespaces.lean",
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 "isIncomplete": false}
Resolution of verySpecificDefinitionNameOfCompletionOpenNamespaces:
{"label": "verySpecificDefinitionNameOfCompletionOpenNamespaces",
 "kind": 21,
 "detail": "Nat",
 "data":
 ["file:///completionOpenNamespaces.lean",
  4,
  68,
  0,
  "cA.B1.verySpecificDefinitionNameOfCompletionOpenNamespaces"]}