public static void TryCopyToLonger()
{
int[] src = { 1, 2, 3 };
int[] dst = { 99, 100, 101, 102 };
Span<int> srcSpan = new Span<int>(src);
bool success = srcSpan.TryCopyTo(dst);
Assert.True(success);
int[] expected = { 1, 2, 3, 102 };
Assert.Equal<int>(expected, dst);
}