@SuppressWarnings("unchecked")
    default T addAllClasses(Collection<? extends ClassOrInterface<?>> members) {
        members.forEach(this::add);
        return (T) this;
    }
Adds all the specified {@link ClassOrInterface} members to this model.

@param members  the new children
@return         a reference to this
common-parent/codegen/src/main/java/com/speedment/common/codegen/model/trait/HasClasses.java