<xs:complexType name="namedGroup" abstract="true" >
  <xs:complexContent mixed="false">
    <xs:restriction base="xs:realGroup">
      <xs:sequence>
        <xs:element minOccurs="0" ref="xs:annotation"/>
        <xs:choice minOccurs="1" maxOccurs="1">
          <xs:element name="all">
            <xs:complexType>
              <xs:complexContent mixed="false">
                <xs:restriction base="xs:all">
                  <xs:group ref="xs:allModel"/>
                  <xs:attribute name="minOccurs" use="prohibited"/>
                  <xs:attribute name="maxOccurs" use="prohibited"/>
                  <xs:anyAttribute namespace="##other" processContents="lax"/>
                </xs:restriction>
              </xs:complexContent>
            </xs:complexType>
          </xs:element>
          <xs:element name="choice" type="xs:simpleExplicitGroup"/>
          <xs:element name="sequence" type="xs:simpleExplicitGroup"/>
        </xs:choice>
      </xs:sequence>
      <xs:attribute name="name" type="xs:NCName" use="required"/>
      <xs:attribute name="ref" use="prohibited"/>
      <xs:attribute name="minOccurs" use="prohibited"/>
      <xs:attribute name="maxOccurs" use="prohibited"/>
      <xs:anyAttribute namespace="##other" processContents="lax"/>
    </xs:restriction>
  </xs:complexContent>
</xs:complexType>