XULDocumentImpl::GetSelection(nsICollection** aSelection)
XULDocumentImpl::GetSelection(nsISelection** aSelection)
XULDocumentImpl::GetSelection(nsICollection** aSelection){    if (!mSelection) {        PR_ASSERT(0);        *aSelection = nsnull;        return NS_ERROR_NOT_INITIALIZED;    }    NS_ADDREF(mSelection);    *aSelection = mSelection;    return NS_OK;}