/// <summary>
/// Establishes client notification of solution events.
/// </summary>
/// <param name="package">
/// Pointer to the Microsoft.VisualStudio.Shell.Interop.IVsSolutionEvents interface on the object
/// requesting notification of solution events.
/// </param>
/// <returns>
/// If the method succeeds, it returns <see cref="Microsoft.VisualStudio.VSConstants.S_OK" />. If it fails, it
/// returns an error code.
/// </returns>
public int AdviseSolutionEvents(Package package)
{
return(Solution2.AdviseSolutionEvents(package, out _solutionEventsCookie));
}