@SuppressWarnings("unchecked")
    default T add(final Type exception) {
        getExceptions().add(exception);
        return (T) this;
    }
Adds the specified exception reference to the {@code throws}-clause of
this model.

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