public class ConverterElectricItem implements Converter {
@Override
public void convert(final Object value, final Map<Object, Object> output) {
if (value instanceof ItemStack) {
final ItemStack stack = (ItemStack) value;
final Item item = stack.getItem();
if (item instanceof IElectricItem) {
final IElectricItem electricItem = (IElectricItem) item;
output.put("canProvideEnergy", electricItem.canProvideEnergy(stack));
output.put("charge", ElectricItem.manager.getCharge(stack));
output.put("maxCharge", electricItem.getMaxCharge(stack));