private Utf8MessageState _state = new();
private byte[] _utf8Data = """
    Shall I compare thee to a summer’s day?
    Thou art more lovely and more temperate:
    Rough winds do shake the darling buds of May,
    And summer’s lease hath all too short a date:
    Sometime too hot the eye of heaven shines,
    And often is his gold complexion dimm’d;
    And every fair from fair sometime declines,
    By chance or nature’s changing course untrimm’d;
    But thy eternal summer shall not fade
    Nor lose possession of that fair thou owest;
    Nor shall Death brag thou wander’st in his shade,
    When in eternal lines to time thou growest:
    So long as men can breathe or eyes can see,
    So long lives this and this gives life to thee.
    """u8.ToArray();

[Benchmark]
public bool Existing() => TryValidateUtf8(_utf8Data, true, _state);

[Benchmark]
public bool Utf8IsValid() => Utf8.IsValid(_utf8Data);