...
    <AttributeDefinition xsi:type="MappedAttribute" id="eduPersonAssurance">
        <InputDataConnector ref="myLDAP" attributeNames="memberOf" />
        <ValueMap>
            <ReturnValue>https://refeds.org/assurance</ReturnValue>
            <SourceValue caseSensitive="false">checked_students</SourceValue>
            <SourceValue caseSensitive="false">unchecked_students</SourceValue>
            <SourceValue caseSensitive="false">university_staff</SourceValue>
            <SourceValue caseSensitive="false">university_hospital_staff</SourceValue>
        </ValueMap>
        <ValueMap>
            <ReturnValue>https://refeds.org/assurance/IAP/low</ReturnValue>
            <SourceValue caseSensitive="false">checked_students</SourceValue>
            <SourceValue caseSensitive="false">unchecked_students</SourceValue>
            <SourceValue caseSensitive="false">university_staff</SourceValue>
            <SourceValue caseSensitive="false">university_hospital_staff</SourceValue>
        </ValueMap>
        <ValueMap>
            <ReturnValue>https://refeds.org/assurance/IAP/medium</ReturnValue>
            <SourceValue caseSensitive="false">checked_students</SourceValue>
            <SourceValue caseSensitive="false">university_staff</SourceValue>
            <SourceValue caseSensitive="false">university_hospital_staff</SourceValue>
        </ValueMap>
        <ValueMap>
            <ReturnValue>https://refeds.org/assurance/ATP/ePA-1d</ReturnValue>
            <SourceValue caseSensitive="false">checked_students</SourceValue>
            <SourceValue caseSensitive="false">unchecked_students</SourceValue>
            <SourceValue caseSensitive="false">university_staff</SourceValue>
        </ValueMap>
        <ValueMap>
            <ReturnValue>https://refeds.org/assurance/ATP/ePA-1m</ReturnValue>
            <SourceValue caseSensitive="false">checked_students</SourceValue>
            <SourceValue caseSensitive="false">unchecked_students</SourceValue>
            <SourceValue caseSensitive="false">university_staff</SourceValue>
            <SourceValue caseSensitive="false">university_hospital_staff</SourceValue>
        </ValueMap>
    </AttributeDefinition>
...