ops:document-formatType-REST

<xs:simpleType name="document-formatType-REST">
  <xs:annotation>
    <xs:documentation>- application/pdf: A single page of the document in PDF format. - application/tiff: A single page of the document as a TIFF image. - image/png: A first page clipping as a PNG image.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:string">
    <xs:enumeration value="application/pdf"/>
    <xs:enumeration value="application/tiff"/>
    <xs:enumeration value="image/png"/>
  </xs:restriction>
</xs:simpleType>