new Dropdown implementation incomplete?

According to the Documentation the new Dropdown element has a bunch of public methods, such as

public void ClearOptions()
public void AddOptions() // 3 overloads
...

Alas, none of them seems to be implemented. When trying to call any of them, the compiler always fails with

Error CS1061 ‘Dropdown’ does not contain a definition for ‘ClearOptions’ …

(or ‘AddOptions’ etc, resp). Inspecting the definition (created from metadata) yields no results. Hence the question: is the Dropdown properly implemented? Or will I have to manipulate the options member instead? Is it maybe VS that causes the problem (though I don’t have other similar problems)?

Please tell me that I am only missing something really obvious. :wink:

What version of Unity are you using. I believe these methods were just added in the new 5.3 release.

Add convenience methods to Dropdown
for adding or clearing the options.