import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

public class Main {

    public static void main(String[] arg){
        ResourceRelationshipCharacteristicDTO resourceRelationshipCharacteristicDTO1 =
                new ResourceRelationshipCharacteristicDTO.Builder().value(Optional.ofNullable("Device")).build();
        ResourceRelationshipCharacteristicDTO resourceRelationshipCharacteristicDTO2 =
                new ResourceRelationshipCharacteristicDTO.Builder().value(Optional.ofNullable("Agent Instance")).build();
        List<ResourceRelationshipCharacteristicDTO> listCharacteristic = new ArrayList<>();
        listCharacteristic.add(resourceRelationshipCharacteristicDTO1);
        List<ResourceRelationshipCharacteristicDTO> listCharacteristic2 = new ArrayList<>();
        listCharacteristic2.add(resourceRelationshipCharacteristicDTO2);



        ResourceRefDTO resourceRefDTO = new ResourceRefDTO.Builder().id(Optional.ofNullable("11111")).build();
        ResourceRelationshipDTO relation1 = new ResourceRelationshipDTO.Builder().resourceRefDTO(Optional.ofNullable(resourceRefDTO))
                .resourceRelationshipCharacteristicDTO(listCharacteristic).build();
        ResourceRelationshipDTO relation2 = new ResourceRelationshipDTO.Builder().resourceRefDTO(Optional.ofNullable(resourceRefDTO))
                .resourceRelationshipCharacteristicDTO(listCharacteristic2).build();

        List<ResourceRelationshipDTO> listRelation = new ArrayList<>();
        listRelation.add(relation1);
        listRelation.add(relation2);

        ResourceDTO resource1 = new ResourceDTO.Builder().id(1).relationshipDTO(listRelation).build();
        List<ResourceDTO> resources = new ArrayList<>();
        resources.add(resource1);


        System.out.println(resources);
    }
}