question: private boolean isAgentEmpty ( Agent agent ) { if ( agent != null ) { String first = agent . getFirstName ( ) ; String last = agent . getLastName ( ) ; String email = agent . getEmail ( ) ; String home = agent . getHomepage ( ) ; String org = agent . getOrganisation ( ) ; String phone = agent . getPhone ( ) ; String position = agent . getPosition ( ) ; String city = null ; String street = null ; String country = null ; String code = null ; String province = null ; Address address = agent . getAddress ( ) ; if ( address != null ) { city = address . getCity ( ) ; street = address . getAddress ( ) ; country = address . getCountry ( ) ; code = address . getPostalCode ( ) ; province = address . getProvince ( ) ; } String directory = null ; String identifier = null ; List < UserId > userIds = agent . getUserIds ( ) ; if ( ! userIds . isEmpty ( ) ) { UserId userId = userIds . get ( 0 ) ; directory = userId . getDirectory ( ) ; identifier = userId . getIdentifier ( ) ; } return ( Strings . isNullOrEmpty ( city ) && Strings . isNullOrEmpty ( street ) && Strings . isNullOrEmpty ( country ) && Strings . isNullOrEmpty ( code ) && Strings . isNullOrEmpty ( province ) && Strings . isNullOrEmpty ( first ) && Strings . isNullOrEmpty ( last ) && Strings . isNullOrEmpty ( email ) && Strings . isNullOrEmpty ( home ) && Strings . isNullOrEmpty ( org ) && Strings . isNullOrEmpty ( phone ) && Strings . isNullOrEmpty ( position ) && Strings . isNullOrEmpty ( directory ) && Strings . isNullOrEmpty ( identifier ) ) ; } return true ; }
target:  Determine if the Agent is empty. In other words, the user hasn't entered any information for a single field yet.