c# - Visual studio Test Explorer Group by name Namespace -

is possible group tests namespace in visual studio 2015 test explorer?

in blog - https://blogs.msdn.microsoft.com/visualstudioalm/2016/08/05/evolving-the-visual-studio-test-platform-part-2/

snapshot - https://msdnshared.blob.core.windows.net/media/2016/08/groupingandduration.jpg shows groupby dropdown namespace. not find in visual studio 2015.

is there way, can tree view of tests?

my visual studio 2017 has namespace option, visual studio 2015 not. think left out in 2015.