{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "textDocument/rename",
  "params": {
    "textDocument": {
      "uri": "file:///a/file.ts"
    },
    "position": {
      "line": 5,
      "character": 19
    },
    "newName": "variable_modified"
  }
}