UnityEditor.HeightmapFilters.Noise C# (CSharp) Method

        private static void Noise(float[,] heights, TerrainData terrain)
        {
            for (int i = 0; i < heights.GetLength(0); i++)
            {
                for (int j = 0; j < heights.GetLength(1); j++)
                {
                    float single1 = heights[i, j];
                    single1[0] += Random.value * 0.01f;
                }
            }
        }