/// <summary>
/// Determines if the element can be moved up.
/// </summary>
/// <returns>
/// Returns <see langword="true"/> if this element is not the first one in the collection.
/// Otherwise, returns <see langword="false"/>.
/// </returns>
/// <param name="parameter">Not used</param>
protected override bool InnerCanExecute(object parameter)
{
return(!collection.IsFirst(element));
}
