<?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"
          	xmlns="http://www.omg.org/spec/XMI/20131001"
          	targetNamespace="http://www.omg.org/spec/XMI/20131001">

<xsd:attribute name="id" type="xsd:ID"/>

<xsd:attributeGroup name="IdentityAttribs">
   <xsd:attribute name="label" type="xsd:string" use="optional" form="qualified"/>
   <xsd:attribute name="uuid" type="xsd:string" use="optional" form="qualified"/>
</xsd:attributeGroup>

<xsd:attributeGroup name="LinkAttribs">
   <xsd:attribute name="href" type="xsd:anyURI" use="optional"/>
   <xsd:attribute name="idref" type="xsd:IDREF" use="optional" form="qualified"/>
</xsd:attributeGroup>

<xsd:attributeGroup name="ObjectAttribs">
   <xsd:attributeGroup ref="IdentityAttribs"/>
   <xsd:attributeGroup ref="LinkAttribs"/>
   <xsd:attribute name="type" type="xsd:QName" form="qualified"/>
</xsd:attributeGroup>

<xsd:complexType name="XMI">
  <xsd:choice minOccurs="0" maxOccurs="unbounded">
    <xsd:any processContents="strict"/>
  </xsd:choice>
  <xsd:attribute ref="id"/>
  <xsd:attributeGroup ref="IdentityAttribs"/>
  <xsd:attributeGroup ref="LinkAttribs"/>
  <xsd:attribute name="type" type="xsd:QName" use="optional" form="qualified"/>
</xsd:complexType>
<xsd:element name="documentation" type="Documentation"/>
<xsd:element name="difference" type="Difference"/>
<xsd:element name="extension" type="Extension"/>

<xsd:element name="XMI" type="XMI"/>

<xsd:complexType name="Documentation">
  <xsd:choice minOccurs="0" maxOccurs="unbounded">
    <xsd:element name="contact" type="xsd:string"/>
    <xsd:element name="exporter" type="xsd:string"/>
    <xsd:element name="exporterVersion" type="xsd:string"/>
    <xsd:element name="longDescription" type="xsd:string"/>
    <xsd:element name="shortDescription" type="xsd:string"/>
    <xsd:element name="notice" type="xsd:string"/>
    <xsd:element name="owner" type="xsd:string"/>
    <xsd:element name="timestamp" type="xsd:dateTime"/>
    <xsd:element ref="Extension"/>
  </xsd:choice>
  <xsd:attribute ref="id"/>
  <xsd:attributeGroup ref="ObjectAttribs"/>
</xsd:complexType>

<xsd:complexType name="Extension">
  <xsd:choice minOccurs="0" maxOccurs="unbounded">
    <xsd:any processContents="lax"/>
  </xsd:choice>
  <xsd:attribute ref="id"/>
  <xsd:attributeGroup ref="ObjectAttribs"/>
  <xsd:attribute name="extender" type="xsd:string" use="optional"/>
  <xsd:attribute name="extenderID" type="xsd:string" use="optional"/>
</xsd:complexType>

<xsd:element name="Extension" type="Extension"/>

<xsd:complexType name="Difference">
  <xsd:choice minOccurs="0" maxOccurs="unbounded">
    <xsd:element name="target">
      <xsd:complexType>
        <xsd:choice minOccurs="0" maxOccurs="unbounded">
          <xsd:any processContents="skip"/>
        </xsd:choice>
        <xsd:anyAttribute processContents="skip"/>
      </xsd:complexType>
    </xsd:element>
    <xsd:element name="difference" type="Difference"/>
    <xsd:element name="container" type="Difference"/>
    <xsd:element ref="Extension"/>
  </xsd:choice>
  <xsd:attribute ref="id"/>
  <xsd:attributeGroup ref="ObjectAttribs"/>
  <xsd:attribute name="target" type="xsd:IDREFS" use="optional"/>
  <xsd:attribute name="container" type="xsd:IDREFS" use="optional"/>
</xsd:complexType>

<xsd:element name="Difference" type="Difference"/>

<xsd:complexType name="Add">
  <xsd:complexContent>
    <xsd:extension base="Difference">
      <xsd:attribute name="position" type="xsd:integer" use="optional"/>
      <xsd:attribute name="addition" type="xsd:IDREFS" use="optional"/>
    </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="Add" type="Add"/>

<xsd:complexType name="Replace">
  <xsd:complexContent>
    <xsd:extension base="Difference">
      <xsd:attribute name="position" type="xsd:integer" use="optional"/>
      <xsd:attribute name="replacement" type="xsd:IDREFS"
                   use="optional"/>
    </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="Replace" type="Replace"/>

<xsd:complexType name="Delete">
  <xsd:complexContent>
    <xsd:extension base="Difference"/>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="Delete" type="Delete"/>

<xsd:complexType name="Any">
  <xsd:choice minOccurs="0" maxOccurs="unbounded">
     <xsd:any processContents="skip"/>
  </xsd:choice>
  <xsd:anyAttribute processContents="skip"/>
</xsd:complexType>

</xsd:schema>