Get current Animation Controller being edited by Animator (In Editor)

Is it possible to get the current animation controller (i.e. Animator class) resource that is being edited by the Animator window? I know how to modify an animation controller at runtime, but I want to be able to modify one in the editor without having to run the game. I have not been able to find any classes that let me get anything from the Animator window. Any help would be appreciated, thanks.