<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
 targetNamespace="urn:ietf:params:xml:ns:xcon-conference-info"
 xmlns="urn:ietf:params:xml:ns:xcon-conference-info"
 xmlns:xs="http://www.w3.org/2001/XMLSchema"
 elementFormDefault="qualified">

 <!-- include patch-ops type definitions -->
 <xs:include
  schemaLocation="urn:ietf:params:xml:schema:patch-ops"/>

 <!-- partial updates -->
 <xs:element name="conference-info-diff">
  <xs:complexType>
   <xs:sequence minOccurs="0" maxOccurs="unbounded">
    <xs:choice>
     <!-- add some content -->
     <xs:element name="add">
      <xs:complexType mixed="true">
       <xs:complexContent>
        <xs:extension base="add">
         <xs:anyAttribute processContents="lax"/>
        </xs:extension>
       </xs:complexContent>
      </xs:complexType>
     </xs:element>
     <!-- remove some content -->
     <xs:element name="remove">
      <xs:complexType>
       <xs:complexContent>
        <xs:extension base="remove">
         <xs:anyAttribute processContents="lax"/>
        </xs:extension>
       </xs:complexContent>
      </xs:complexType>
     </xs:element>
     <!-- replace some content -->
     <xs:element name="replace">
      <xs:complexType mixed="true">
       <xs:complexContent>
        <xs:extension base="replace">
         <xs:anyAttribute processContents="lax"/>
        </xs:extension>
       </xs:complexContent>
      </xs:complexType>
     </xs:element>
     <!-- allow extension elements from other namespaces -->
     <xs:any namespace="##other" processContents="lax"/>
    </xs:choice>
   </xs:sequence>
   <xs:attribute name="entity" type="xs:anyURI" use="required"/>
   <xs:anyAttribute processContents="lax"/>
  </xs:complexType>
 </xs:element>
</xs:schema>
