@ Override public Set < IPersonAttributes > getPeopleWithMultivaluedAttributes ( final Map < String , List < Object > > query , final IPersonAttributeDaoFilter filter ) { if ( query == null ) { throw new IllegalArgumentException ( "seed may not be null" ) ; } return Collections . singleton ( ( IPersonAttributes ) new AttributeNamedPersonImpl ( getUsernameAttributeProvider ( ) . getUsernameAttribute ( ) , query ) ) ; }
Returns a duplicate of the seed it is passed .