UnityEngine.TerrainData.INTERNAL_CALL_SetTreeInstance C# (CSharp) Method

        private static extern void INTERNAL_CALL_SetTreeInstance(TerrainData self, int index, ref TreeInstance instance);
        [MethodImpl(MethodImplOptions.InternalCall)]

 public void SetTreeInstance(int index, TreeInstance instance)
 {
     TerrainData.INTERNAL_CALL_SetTreeInstance(this, index, ref instance);
 }