The using directive for 'System.Collections.Generic' appeared previously in this namespace

Rename type name GameCollection so that it does not end in 'Collection' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1711)

Declare types in namespaces (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1050)

Member 'saveRenameInProgress' is explicitly initialized to its default value (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1805)

Rename type name AllowPrivateMessagesFromEnum so that it does not end in 'Enum' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1711)

The behavior of 'int.ToString()' could vary based on the current user's locale settings. Replace this call in 'ClientConfiguration.GetThemeInfoFromIndex(int)' with a call to 'int.ToString(IFormatProvider)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)

Member 'GetOperatingSystemVersion' does not access instance data and can be marked as static (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1822)

Prefer 'AsSpan' over 'Substring' when span-based overloads are available (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1846)

Count() is used where Any() could be used instead to improve performance (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1827)