code: public void setTarget(Map<String, Object> target) {
          removeEntriesStartingWith(TARGET);
          eventMap.putAll(target);
      }
docs: Set the target keys/values. The provided Map will completely replace
  the existing target, i.e. all current target keys/values will be removed
  and the new target keys/values will be added.
  
  @param target - Map of all the target keys/values