code: void addValue(V value, Resource resource) {
  		this.valueQueue.add(value);
  		this.valueSubjectQueue.add(resource);
  	}
docs: Adds the given value to the list of values that should still be
  serialized. The given RDF resource will be used as a subject.
  
  @param value
  the value to be serialized
  @param resource
  the RDF resource that is used as a subject for serialization