Process completed with exit code 1.

Change return type of method 'LoadTemplateContent' from 'System.Windows.FrameworkElement?' to 'System.Windows.Controls.ContentPresenter?' for improved performance (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1859)

Modify 'OneWayTo' to catch a more specific allowed exception type, or rethrow the exception (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1031)

Change return type of method 'CreateSingletonEnumerable' from 'System.Collections.IEnumerable' to 'System.Array' for improved performance (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1859)

Change return type of method 'LoadTemplateContent' from 'System.Windows.FrameworkElement?' to 'System.Windows.Controls.ContentPresenter?' for improved performance (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1859)

Modify 'OneWayTo' to catch a more specific allowed exception type, or rethrow the exception (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1031)

Change return type of method 'CreateSingletonEnumerable' from 'System.Collections.IEnumerable' to 'System.Array' for improved performance (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1859)

Use 'string.Contains(char)' instead of 'string.Contains(string)' when searching for a single character (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1847)

'string.Contains(string)' has a method overload that takes a 'StringComparison' parameter. Replace this call in 'Gu.Wpf.DataGrid2D.UiTests.ItemsSourceTests.CellTemplate.CellTemplateTest(string)' with a call to 'string.Contains(string, System.StringComparison)' for clarity of intent. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1307)

Nullability of type of parameter 'component' doesn't match overridden member (possibly because of nullability attributes).