function(identifier){
            if(!Bella.contains(this.lines, identifier)){
                this.lines.push(identifier);
                this.Event.onAddOnlineUser(identifier);
                return true;
            }
            return false;
        }
function(identifier){
            if(!Bella.contains(this.lines, identifier)){
                this.lines.push(identifier);
                this.Event.onAddOnlineUser(identifier);
                return true;
            }
            return false;
        }
function ( identifier ) { if ( ! Bella . contains ( this . lines , identifier ) ) { this . lines . push ( identifier ) ; this . Event . onAddOnlineUser ( identifier ) ; return true ; } return false ; }
Methods to handle lines

*
Methods to handle lines