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<dsCompositeModel
        xmlns="info:fedora/fedora-system:def/dsCompositeModel#">

    <dsTypeModel ID="DC">
        <form MIME="text/xml"/>
        <extension<extensions name="SCHEMA">

        </extensions>
    </dsTypeModel>
    <dsTypeModel ID="ORIGIN">
        <form MIME="text/xml"/>
        <extension<extensions name="SCHEMA">

        </extensions>
    </dsTypeModel>
</dsCompositeModel>

<dsCompositeModel
        xmlns="info:fedora/fedora-system:def/dsCompositeModel#"
        xmlns:schema="http://ecm.sourceforge.net/types/dscompositeschema/0/1/#">

    <!-- The DC datastream is declared. It's mime type must be text/xml. It must adhere to the xml schema residing in on the specified URL.
    <dsTypeModel ID="DC">
        <form MIME="text/xml"/>
        <extension<extensions name="SCHEMA">
            <reference type="url" value="http://www.openarchives.org/OAI/2.0/oai_dc.xsd"/>
        </extensions>
    </dsTypeModel>


    <!-- The PBCORE datastream is declared. It's mime type must be text/xml. It must adhere to the xml schema residing in the PDCORE_SCHEMA datastream in this content model-->
    <dsTypeModel ID="PBCORE">
        <form MIME="text/xml"/>
        <extension<extensions name="SCHEMA">
            <reference type="datastream" value="PDCORE_SCHEMA"/>
        </extensions>
    </dsTypeModel>

    <!-- The ORIGIN datastream is declared. It's mime type must be text/xml. It must adhere to the xml schema inlined here
    <dsTypeModel ID="ORIGIN">
        <form MIME="text/xml"/>
        <extension<extensions name="SCHEMA">
            <schema targetNamespace="originNamespace" xmlns="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
                <element name="origin" type="string"/>
            </schema>
        </extensions>
    </dsTypeModel>

</dsCompositeModel>