<xs:attributeGroup name="contributionAttributes">
    <xs:attribute name="href" type="xs:anyURI" use="required">
      <xs:annotation>
        <xs:documentation>The URI of this Contribution</xs:documentation>
      </xs:annotation>
    </xs:attribute>

    <xs:attribute name="id" type="xs:long" use="required">
      <xs:annotation>
        <xs:documentation>This unique ID of this Contribution</xs:documentation>
      </xs:annotation>
    </xs:attribute>
  </xs:attributeGroup>


  <xs:complexType name="briefContributionType">
    <xs:annotation>
      <xs:documentation>Information common to all Contributions</xs:documentation>
    </xs:annotation>

    <xs:simpleContent>
      <xs:extension base="xs:string">
        <xs:attributeGroup ref="vhm:contributionAttributes"/>
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>


  <xs:complexType name="contributionsType" >
    <xs:annotation>
      <xs:documentation>A standard list of Contributions</xs:documentation>
    </xs:annotation>

    <xs:sequence>
##      <xs:element name="TODO" minOccurs="0" maxOccurs="unbounded" type="vhm:briefContributionType"/>
    </xs:sequence>

    <xs:attribute name="start" type="xs:int" use="required">
      <xs:annotation>
        <xs:documentation>The starting index for this page of results</xs:documentation>
      </xs:annotation>
    </xs:attribute>

    <xs:attribute name="end" type="xs:int" use="required">
      <xs:annotation>
        <xs:documentation>The ending index for this page of results</xs:documentation>
      </xs:annotation>
    </xs:attribute>

    <xs:attribute name="next" type="xs:anyURI">
      <xs:annotation>
        <xs:documentation>URL for the next page of results</xs:documentation>
      </xs:annotation>
    </xs:attribute>

    <xs:attribute name="previous" type="xs:anyURI">
      <xs:annotation>
        <xs:documentation>URL for the previous page of results</xs:documentation>
      </xs:annotation>
    </xs:attribute>
  </xs:complexType>