int IVsLibraryMgr.GetLibraryAt(uint nLibIndex, out IVsLibrary ppLibrary)
        {
            if (nLibIndex != 0)
            {
                ppLibrary = null;
                return(VSConstants.E_INVALIDARG);
            }

            ppLibrary = this;
            return(VSConstants.S_OK);
        }
        int IVsLibraryMgr.GetLibraryAt(uint nLibIndex, out IVsLibrary ppLibrary)
        {
            if (nLibIndex != 0)
            {
                ppLibrary = null;
                return VSConstants.E_INVALIDARG;
            }

            ppLibrary = this;
            return VSConstants.S_OK;
        }