https://learn.microsoft.com/ja-jp/dotnet/api/system.net.http.json.httpcontentjsonextensions.readfromjsonasync?view=net-10.0
HttpContentJsonExtensions.ReadFromJsonAsync Method (System.Net.Http.Json) | Microsoft Learn
Reads the HTTP content and returns the value that results from deserializing the content as JSON in an asynchronous operation.
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