Hiding Target

@Override
public void register(IWailaCommonRegistration registration) {
    registration.blockOperations().hide(Blocks.BARRIER);
    registration.entityTypeOperations().hide(EntityType.AREA_EFFECT_CLOUD);
}

Use the Pick Result as the Target Name, Icon, and Mod Name

@Override
public void register(IWailaCommonRegistration registration) {
    registration.blockOperations().pick(Blocks.PLAYER_HEAD);
}