NS_IMETHOD GetSecurityInfo(nsISupports **info) {*info = nsnull; return NS_OK;}
NS_IMETHOD GetSecurityInfo(nsISupports * *aSecurityInfo) { *aSecurityInfo = nsnull; return NS_OK; }
    NS_IMETHOD GetSecurityInfo(nsISupports **info) {*info = nsnull; return NS_OK;}