Filtered API Request

<!-- API URL: api.foo.bar/geocode?location=90210&format=xml -->

<!-- Standard Response (Before Filter) -->

<ResultSet>
  <Command>geocode</Command>
  <Params>{location=90210, format=xml, filter={state:true,statecode:true}}</Params>
  <Status>OK</Status>
  <StatusMessage>Request returned as expected.</StatusMessage>
  <Secure>0</Secure>
  <Key>e7a26e99389d0703988a539e7d43c73aea933862</Key>
  <Size>1</Size>
  <Result>
    <record id="record_0">
      <countrycode>US</countrycode>
      <line4>United States</line4>
      <street/>
      <state>California</state>
      <offsetlat>34.092807</offsetlat>
      <house/>
      <city>Beverly Hills</city>
      <xstreet/>
      <name/>
      <countycode/>
      <longitude>-118.411115</longitude>
      <woetype>11</woetype>
      <unittype/>
      <offsetlon>-118.411115</offsetlon>
      <statecode>CA</statecode>
      <hash/>
      <postal>90210</postal>
      <woeid>12795711</woeid>
      <neighborhood/>
      <uzip>90210</uzip>
      <country>United States</country>
      <unit/>
      <county>Los Angeles County</county>
      <quality>60</quality>
      <radius>5000</radius>
      <latitude>34.092807</latitude>
      <line1/>
      <line3/>
      <line2>Beverly Hills, CA  90210</line2>
    </record>
  </Result>
</ResultSet>

<!-- FILTERED API REQUEST -->

<!-- api.foo.bar/geocode?location=90210&filter={state:true,statecode:true}&format=xml -->

<!-- FILTERED RESPONSE -->
<ResultSet>
  <Command>geocode</Command>
  <Params>{location=90210, format=xml, filter={state:true,statecode:true}}</Params>
  <Status>OK</Status>
  <StatusMessage>Request returned as expected.</StatusMessage>
  <Secure>0</Secure>
  <Key>e7a26e99389d0703988a539e7d43c73aea933862</Key>
  <Size>1</Size>
  <Result>
    <record id="record_0">
      <state>California</state>
      <statecode>CA</statecode>
    </record>
  </Result>
</ResultSet>