Dereference as not-null value

Dereference as not-null value is premium code action that allows for generating is {} variable expression inside the if statement condition:

This code action is also available in the form of intellisense:

Code completions are supported only by VisualStudio. When using VisualStudio with Resharper you need to review Resharper settings to make sure that they are not disabled. Check Using with Resharper section for more details.