code: public DocumentNode getSpecificationHierarchy(Repository repository, SystemUnderTest systemUnderTest)
  			throws GreenPepperServerException
  	{
  		return xmlRpc.getSpecificationHierarchy(repository, systemUnderTest, getIdentifier());
  	}
docs: <p>getSpecificationHierarchy.</p>
  
  @param repository a {@link com.greenpepper.server.domain.Repository} object.
  @param systemUnderTest a {@link com.greenpepper.server.domain.SystemUnderTest} object.
  @return a {@link DocumentNode} object.
  @throws com.greenpepper.server.GreenPepperServerException if any.