AnimatorController.CreateBlendTreeInController

public Animations.AnimatorState CreateBlendTreeInController (string name, out Animations.BlendTree tree);

public Animations.AnimatorState CreateBlendTreeInController (string name, out Animations.BlendTree tree, int layerIndex);

Parameters

name	The name of the BlendTree.
tree	The created BlendTree.
layerIndex	The index where the BlendTree will be created.

Creates a BlendTree in a new AnimatorState.

The BlendTree will be a sub asset of the AnimatorController. This function pushes an Undo operation.