Update JsonSerializerOptions.AddContext to have combine semantics. #80698
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Tagging subscribers to this area: @dotnet/area-system-text-json, @gregsdennis Issue Details
Fixes #80527.
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krwq
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Jan 16, 2023
...braries/System.Text.Json/src/System/Text/Json/Serialization/Metadata/JsonTypeInfoResolver.cs
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src/libraries/System.Text.Json/src/System/Text/Json/Serialization/JsonSerializerOptions.cs
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layomia
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krwq
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src/libraries/System.Text.Json/src/System/Text/Json/Serialization/JsonSerializerContext.cs
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JsonTypeInfoResolver.Combineso that it tolerates null arguments and flattens already combined arguments.JsonSerializerOptions.AddContextso that it appends the specified resolver to any already configuredTypeInfoResolverconfiguration. The new context also no longer encapsulates the options instance, making it read-only. This can be a breaking change in certain scenaria.Fixes #80527.