@SuppressWarnings("unchecked")
    default T add(final Constructor constr) {
        getConstructors().add(constr.setParent(this));
        return (T) this;
    }
Adds the specified {@link Constructor} to this model.

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