return NS_ERROR_NOT_IMPLEMENTED;
return(NS_ERROR_NOT_IMPLEMENTED);
nsBookmarksService::IsCommandEnabled(nsISupportsArray/*<nsIRDFResource>*/* aSources,                                         nsIRDFResource*   aCommand,                                         nsISupportsArray/*<nsIRDFResource>*/* aArguments,                                         PRBool* aResult){    return NS_ERROR_NOT_IMPLEMENTED;}