In my Schema File I defined a *Group* with a *Sequence* of possible *Elements*.

```
<group name="argumentGroup">
    <sequence>
        <element name="foo" type="double" />
        <element name="bar" type="string" />
        <element name="baz" type="integer" />
    </sequence> 
</group>

```

I then reference this *Group* like this:

```
<element name="arguments">
    <complexType>
        <group ref="my:argumentGroup"/>
    </complexType>
</element>

```

Is it possible to reference the *Group* at some other point but restrict it so it's a *Choice* instead of a *Sequence*. The position where I want to reuse it would only allow one of the *Elements* within.

```
<element name="argument" minOccurs="0" maxOccurs="1">
    <complexType>
        <group name="my:argumentGroup">
            <! -- Somehow change argumentGroup sequence to choice here -->
        </group>
    <complexType>
</element>

```