How to show all languages in a request?

Question

octokit.net

To filter the query by language I do this

var request = new SearchRepositoriesRequest("mvc client side framework")
{
   // how about we restrict the language the library is written in?
    Language = Language.JavaScript
}

How to make all languages ​​appear in the request again?
Something like:

Language = Language.All

Answer 1

属性Language是可为空的，所以Language = null吗？