code: public boolean isLinked(ParaObject obj, String type2, String id2) {
  		if (obj == null || obj.getId() == null || type2 == null || id2 == null) {
  			return false;
  		}
  		String url = Utils.formatMessage("{0}/links/{1}/{2}", obj.getObjectURI(), type2, id2);
  		Boolean result = getEntity(invokeGet(url, null), Boolean.class);
  		return result != null && result;
  	}
docs: Checks if this object is linked to another.
  @param type2 the other type
  @param id2 the other id
  @param obj the object to execute this method on
  @return true if the two are linked