Method add

slf4j-api/src/main/java/org/slf4j/Marker.java:75–75

Add a reference to another Marker. Note that the fluent API allows adding multiple markers to a logging statement. It is often preferable to use multiple markers instead of nested markers. @param reference a reference to another marker @throws IllegalArgumentException

(Marker reference)

     *                 if 'reference' is null
     */
    public void add(Marker reference);

    /**
     * Remove a marker reference.