How are null values in C# string interpolation handled?

In C# 6.0, string interpolations are added.

string myString = $"Value is {someValue}";

How are null values handled in the above example? (if someValue is null)

EDIT: Just to clarify, I have tested and am aware that it didn't fail, the question was opened to identify whether there are any cases to be aware of, where I'd have to check for nulls before using string interpolation.