Avoid creating a new 'JsonSerializerOptions' instance for every serialization operation. Cache and reuse instances instead. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1869)

Field should be private (https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1401.md)

Do not declare visible instance fields (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1051)

A closing brace should not be preceded by a blank line. (https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1508.md)

Remove the underscores from member name ClassifiedAds.ApiIntegrationTests.WebAPI.ConfigurationEntriesControllerTests.AllInOne_SensiveValue() (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1707)

Remove the underscores from member name ClassifiedAds.ApiIntegrationTests.WebAPI.ConfigurationEntriesControllerTests.AllInOne_NonSensiveValue() (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1707)

Type 'TestBase' owns disposable field(s) '_httpClient' but is not disposable (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1001)

Avoid creating a new 'JsonSerializerOptions' instance for every serialization operation. Cache and reuse instances instead. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1869)

Field should be private (https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1401.md)