<xs:element name="modules" minOccurs="1" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:complexType>
    <xs:sequence>
      <xs:element name="module" minOccurs="1" maxOccurs="unbounded">
        <xs:complexType>
          <xs:sequence>
            <xs:element name="file" type="xs:string" minOccurs="1" maxOccurs="unbounded" />
          </xs:sequence>
          <xs:attribute name="environment" use="required">
            <xs:simpleType>
              <xs:restriction base="xs:string">
                <xs:enumeration value="shellui" />
                <xs:enumeration value="vaultui" />
                <xs:enumeration value="vaultcore" />
              </xs:restriction>
            </xs:simpleType>
          </xs:attribute>
          <xs:attribute name="name" type="xs:string" />
          <xs:attribute name="engine" type="xs:string" />
          <xs:attribute name="event-priority" type="xs:integer" />
          <xs:attribute name="enabled" type="xs:boolean" />
          <xs:attribute name="fast-browsing-compatible" type="xs:boolean" />
        </xs:complexType>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
</xs:element>