https://learn.microsoft.com/en-us/dotnet/api/system.xml.serialization.xmlserializationfixupcallback?view=net-10.0&redirectedfrom=MSDN
XmlSerializationFixupCallback Delegate (System.Xml.Serialization) | Microsoft Learn
Delegate used by the XmlSerializer class for deserialization of SOAP-encoded XML data.
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