this.parameters = parameters; if( parameters != null ) { sequence.addElement(parameters); } else { sequence.addElement(new NULL()); }
    public AlgorithmIdentifier(OBJECT_IDENTIFIER oid, ASN1Value parameters) {        this.oid = oid;        sequence.addElement( oid );        this.parameters = parameters;        if( parameters != null ) {            sequence.addElement(parameters);        } else {            sequence.addElement(new NULL());        }    }