javaee:service-refGroup

<xsd:group name="service-refGroup">
  <xsd:sequence>
    <xsd:element name="service-ref" type="javaee:service-refType" minOccurs="0" maxOccurs="unbounded">
      <xsd:key name="service-ref_handler-name-key">
        <xsd:annotation>
          <xsd:documentation>Defines the name of the handler. The name must be unique within the module.</xsd:documentation>
        </xsd:annotation>
        <xsd:selector xpath="javaee:handler"/>
        <xsd:field xpath="javaee:handler-name"/>
      </xsd:key>
    </xsd:element>
  </xsd:sequence>
</xsd:group>