question: public List < Struct > listTraitDefinitions ( final String guid ) throws AtlasServiceException { JSONObject jsonResponse = callAPI ( API . GET_ALL_TRAIT_DEFINITIONS , null , guid , TRAIT_DEFINITIONS ) ; List < JSONObject > traitDefList = extractResults ( jsonResponse , AtlasClient . RESULTS , new ExtractOperation < JSONObject , JSONObject > ( ) ) ; ArrayList < Struct > traitStructList = new ArrayList < > ( ) ; for ( JSONObject traitDef : traitDefList ) { Struct traitStruct = InstanceSerialization . fromJsonStruct ( traitDef . toString ( ) , true ) ; traitStructList . add ( traitStruct ) ; } return traitStructList ; }
target:  Get all trait definitions for an entity