Fix formatting (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0055)

Fix formatting (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0055)

Fix formatting (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0055)

Blank line required between block and subsequent statement (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide2003)

In externally visible method 'string StringOut.ToStringOut<TSeries>(IReadOnlyList<TSeries> series, OutType outType, int decimalsToDisplay)', validate parameter 'series' is non-null before using it. If appropriate, throw an 'ArgumentNullException' when the argument is 'null'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1062)

Populate switch (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0072)

Populate switch (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0072)

Fix formatting (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0055)

Fix formatting (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0055)