{
    "jsonrpc": "2.0",
    "method": "textDocument/didChange",
    "params": {
        "textDocument": {
            "uri": "file:///some/file.xml",
            "version": 2
        },
        "contentChanges": [
            {
                "range": {
                    "start": {
                        "line": 1,
                        "character": 4
                    },
                    "end": {
                        "line": 1,
                        "character": 4
                    }
                },
                "text": "d"
            }
        ]
    }
}