<element name="Notify" type="conf:NotifyType" minOccurs="0" maxOccurs="unbounded"/>
<element ref="saml:Audience" minOccurs="0" maxOccurs="unbounded"/>
<element name="MetadataProvider" type="conf:PluggableType"/>
- <element name="TrustEngine" type="conf:PluggableType"/>
+ <element name="TrustEngine" type="conf:PluggableType" minOccurs="0"/>
<element name="AttributeExtractor" type="conf:PluggableType" minOccurs="0"/>
<element name="AttributeResolver" type="conf:PluggableType" minOccurs="0"/>
<element name="AttributeFilter" type="conf:PluggableType" minOccurs="0"/>