<wps:Input>
  <ows:Identifier>features</ows:Identifier>
  <wps:Reference mimeType="text/xml" xlink:href="http://geoserver/wfs" method="POST">
    <wps:Body>
      <wfs:GetFeature service="WFS" version="1.0.0" outputFormat="GML2" xmlns:siasar="http://siasar.org">
        <wfs:Query typeName="{{layer}}">
          <ogc:Filter>
            <ogc:And>
              <ogc:BBOX>
                <ogc:PropertyName>geom</ogc:PropertyName>
                <gml:Envelope srsName="http://www.opengis.net/gml/srs/epsg.xml#3857">
                  <gml:upperCorner>{{extent.[0]}} {{extent.[1]}}</gml:upperCorner>
                  <gml:lowerCorner>{{extent.[2]}} {{extent.[3]}}</gml:lowerCorner>
                </gml:Envelope>
              </ogc:BBOX>
              {{#each filters}}
                <ogc:{{ogcOperator}} wildCard="%">
                  <ogc:PropertyName>{{property}}</ogc:PropertyName>
                  <ogc:Literal>{{value}}</ogc:Literal>
                </ogc:{{ogcOperator}}>
              {{/each}}
            </ogc:And>
          </ogc:Filter>
        </wfs:Query>
      </wfs:GetFeature>
    </wps:Body>
  </wps:Reference>
</wps:Input>