public static void PrintFirstItem_Struct(Matrix_Struct matrix_Struct)
 => Debug.WriteLine(matrix_Struct.i00);
        public static void BenchmarkMatrixStructByRef()
        {
            Matrix_Struct MatrixStruct = new Matrix_Struct(1, 2, 3, 4, 5, 6, 7, 8, 9);

            PrintFirstItem_Struct_Ref(ref MatrixStruct);
        }