UnityEngine.Experimental.Director.AnimatorControllerPlayable.GetFloatID C# (CSharp) Method

        private extern float GetFloatID(int id);
        [MethodImpl(MethodImplOptions.InternalCall), WrapperlessIcall]

 public float GetFloat(int id)
 {
     return(AnimatorControllerPlayable.GetFloatID(ref this, id));
 }