public void IsRelativeTest(string path, bool expected)
    {
        StringBuilder sb = new StringBuilder(path);

        Assert.Equal(expected, PathInternal.IsRelative(sb));

        Assert.Equal(expected, PathInternal.IsRelative(path));
    }
 public void IsRelativeTest(string path, bool expected)
 {
     Assert.Equal(expected, PathInternal.IsRelative(path));
 }