{"textDocument": {"uri": "file://compHeader.lean"},
 "position": {"line": 2, "character": 22}}
{"items":
 [{"label": "veryLongNam", "kind": 6, "detail": "Sort u_1"},
  {"label": "veryLongNameForCompletion", "kind": 21, "detail": "Type"}],
 "isIncomplete": true}