@SuppressWarnings("unchecked")
    default T add(final Field field) {
        getFields().add(field.setParent(this));
        return (T) this;
    }
Adds the specified {@link Field} to this model.

@param field  the new child
@return       a reference to this
common-parent/codegen/src/main/java/com/speedment/common/codegen/model/trait/HasFields.java