code: public Set<String> getActivitiesWithRoutingConstraints(){
  		Set<String> result = new HashSet<>();
  		String propertyValue = getProperty(ConstraintContextProperty.ACTIVITIES_WITH_CONSTRAINTS);
  		if(propertyValue == null)
  			return result;
  		StringTokenizer activityTokens = StringUtils.splitArrayString(propertyValue, " ");
  		while(activityTokens.hasMoreTokens()){
  			result.add(activityTokens.nextToken());
  		}
  		return result;
  	}
docs: Returns the names of all activities with routing constraints.
  @return A set of all activities with routing constraints.