GetNode()

GDScript has a convenient shortcut for grabbing a child node reference within a script. For example, grabbing an AnimatedSprite and setting to play a certain animation be done with $AnimatedSprite.animation = "animation name". Getting a node in C# and F# is a bit more verbose.

In F#:

let sprite =
    this.GetNode<AnimatedSprite>(new NodePath("AnimatedSprite"))