public JdbiImmutables registerImmutable(Iterable<Class<?>> specs) {
        specs.forEach(this::registerImmutable);
        return this;
    }
Convenience method for registering many immutable types.
@see #registerImmutable(Class)
core/src/main/java/org/jdbi/v3/core/mapper/immutables/JdbiImmutables.java