/// <summary>
/// Appends a string to this string.
/// </summary>
/// <param name="s">The string to append.</param>
public void Append(NSString s)
{
Append(s.GetContent());
}
/// <summary>
/// Prepends a string to this string.
/// </summary>
/// <param name="s">The string to prepend.</param>
public void Prepend(NSString s)
{
Prepend(s.GetContent());
}