import org.eclipse.jdt.annotation.NonNull;
-// FIXME: 4.0.0: we need error reporting, is this class even useful?
-public interface Serializer<P, I> {
- @NonNull P serialize(@NonNull I input);
+/**
+ * An entity which is able to convert some input into a product.
+ *
+ * @param <P> Product type
+ * @param <I> Input type
+ * @param <X> Error exception type
+ */
+public interface Serializer<P, I, X extends Exception> {
+ /**
+ * Convert an input into a product.
+ *
+ * @param input Input
+ * @return A product
+ * @throws NullPointerException if input is null
+ * @throws X when input is not valid
+ */
+ @NonNull P serialize(@NonNull I input) throws X;
}