Optional<Relationship> addRelationShip(final String globalCustomerId, final String serviceType,
final String serviceInstanceId, final Relationship relationship, final String requestUri);
boolean deleteSericeInstance(final String globalCustomerId, final String serviceType,
final String serviceInstanceId, final String resourceVersion);
Optional<Relationship> addRelationShip(final String globalCustomerId, final String serviceType,
final String serviceInstanceId, final Relationship relationship, final String requestUri);
boolean deleteSericeInstance(final String globalCustomerId, final String serviceType,
final String serviceInstanceId, final String resourceVersion);