public ComponentManager(){
  gralComponents=new SequenceCollection();
  gralSeeds=Collections.unmodifiableSet(Collections.<Sequence>emptySet());
}

public ComponentManager ( ) { gralComponents = new SequenceCollection ( ) ; gralSeeds = Collections . unmodifiableSet ( Collections . < Sequence > emptySet ( ) ) ; }
create an empty component manager , with an empty seed sequence set .
