Version: 5.5
public void CrossFadeInFixedTime (string stateName, float transitionDuration, int layer= -1, float fixedTime= 0.0f);
public void CrossFadeInFixedTime (int stateNameHash, float transitionDuration, int layer= -1, float fixedTime= 0.0f);

説明

IAnimatorControllerPlayable.CrossFadeInFixedTime を参照してください。