Understanding the line coverage when running Unit Tests

HI, In my unit test coverage report it shows a line with the ending curly braces to be not covered. What does it mean? And how to achieve the full coverage for that? Its the same for one of the example you have given in your website here  https://blog.jetbrains.com/dotnet/2017/01/18/new-code-coverage-highlighting-in-dotcover-2016-3/

https://imgur.com/NIAU1DD