Linkcontroller interface

public Link getByID(final String sourceId, final String targetId);

public void delete(final String sourceId, final String targetId);

public List<Link> list();

public List<Link> list(final Setup setup);

public Long count(final Setup setup);

public List<Link> listCapabilityLinks(final Capability capability, final Setup setup);

public List<String> listLinkCapabilities(final Link link);

public List<Link> list(final Setup setup, final Capability capability);

public Link prepareInsertLink(final Testbed testbed, final String sourceId, final String targetId);

public void update(final Link link);