UnityEngine.TransformExtensions.AddValues C# (CSharp) Method

        public static Vector3 AddValues(this Vector3 vector3,
            float x = float.NaN, float y = float.NaN, float z = float.NaN)
        {
            if (!float.IsNaN(x))
                vector3.x += x;

            if (!float.IsNaN(y))
                vector3.y += y;

            if (!float.IsNaN(z))
                vector3.z += z;

            return vector3;
        }