Hi,

Searched the docs for how to capture output to console.
I am using VSCode and unfortunately currently unable to use the Debug Test link above test method, receiving an ArgumentException related to OmniSharp. So....I am using dotnet test

When I use ITestOutputHelper to capture output for test debugging purposes I then run tests using dotnet test. No output is displayed

In the same way that we can do:

DotNetCoreBuild
DotNetCorePublish
etc

Would be good to be able to run DotNetCoreWatch as a top level task in my Cake Build script.

If a component has a child content parameter that is a RenderFragment<TValue>, then the parameter builder's AddChildContent method should throw an exception with an error message telling the user to use .Add(p => p.ChildContent, ...) instead.

For example, the following should throw an helpful exception:

var cut = RenderComponent<Virtualize<string>>(ps => ps
	.Add(p => p.Items, Te