<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.group.org/group/xsd"
        xmlns:tns="http://www.group.org/group/xsd" xmlns:groupsvc="http://www.group.org/group/wsdl"
        xmlns:wsdlx="http://www.w3.org/ns/wsdl-extensions" elementFormDefault="qualified">

        <xsd:group name="subElements">
                <xsd:choice>
                        <xsd:element name="subElementA" type="xsd:float"/>
                        <xsd:element name="subElementB" type="xsd:double"/>
                </xsd:choice>
        </xsd:group>

        <xsd:complexType name="groupTest">
                <xsd:sequence>
                        <xsd:group ref="tns:subElements"/>
                </xsd:sequence>
        </xsd:complexType>

</xsd:schema>