Converting null literal or possible null value to non-nullable type.

Converting null literal or possible null value to non-nullable type.

Null should not be used for type parameter 'str' of type 'string'. Use a non-null value, or convert the parameter to a nullable type. (https://xunit.net/xunit.analyzers/rules/xUnit1012)

Null should not be used for type parameter 'str' of type 'string'. Use a non-null value, or convert the parameter to a nullable type. (https://xunit.net/xunit.analyzers/rules/xUnit1012)

Prefer 'static readonly' fields over constant array arguments if the called method is called repeatedly and is not mutating the passed array (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1861)

Prefer 'static readonly' fields over constant array arguments if the called method is called repeatedly and is not mutating the passed array (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1861)

Prefer 'static readonly' fields over constant array arguments if the called method is called repeatedly and is not mutating the passed array (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1861)

Prefer 'static readonly' fields over constant array arguments if the called method is called repeatedly and is not mutating the passed array (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1861)

Type 'Foo' can be sealed because it has no subtypes in its containing assembly and is not externally visible (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1852)