question: public List < Boundary > populateWard ( final Long zoneId ) { List < Boundary > wardList = new LinkedList < Boundary > ( ) ; try { wardList = boundaryService . getChildBoundariesByBoundaryId ( zoneId ) ; } catch ( final Exception e ) { LOGGER . error ( "Error while loading warda - wards." + e . getMessage ( ) ) ; throw new ApplicationRuntimeException ( "Unable to load ward information" , e ) ; } return wardList ; }
target:  Populate the ward list by zone