<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://www.w3.org/2001/XMLSchema XMLSchema.xsd"
            xmlns="http://www.codesynthesis.com/xmlns/test"
            targetNamespace="http://www.codesynthesis.com/xmlns/test">

  <!-- Simple case. -->
  
  <xsd:attributeGroup name="gfoo_1">
    <xsd:attribute name="foo_1_1" type="xsd:string"/>
    <xsd:attribute name="foo_1_2" type="xsd:string"/>
  </xsd:attributeGroup>

  <xsd:attributeGroup name="gfoo_2">
    <xsd:attributeGroup ref="gfoo_1"/>
    <xsd:attribute name="foo_2_1" type="xsd:string"/>
    <xsd:attribute name="foo_2_2" type="xsd:string"/>
  </xsd:attributeGroup>

  <xsd:complexType name="Foo">
    <xsd:attributeGroup ref="gfoo_2"/>
  </xsd:complexType>



  <!-- Forward reference. -->

  <xsd:attributeGroup name="gbar_3">
    <xsd:attribute name="bar_3_1" type="xsd:string"/>
    <xsd:attribute name="bar_3_2" type="xsd:string"/>
    <xsd:attributeGroup ref="gbar_1"/>
  </xsd:attributeGroup>

  <xsd:complexType name="Bar">
    <xsd:attributeGroup ref="gbar_2"/>
  </xsd:complexType>

  <xsd:attributeGroup name="gbar_2">
    <xsd:attributeGroup ref="gbar_3"/>
    <xsd:attribute name="bar_2_1" type="xsd:string"/>
    <xsd:attribute name="bar_2_2" type="xsd:string"/>
  </xsd:attributeGroup>

  <xsd:attributeGroup name="gbar_1">
    <xsd:attribute name="bar_1_1" type="xsd:string"/>
    <xsd:attribute name="bar_1_2" type="xsd:string"/>
  </xsd:attributeGroup>

</xsd:schema>
