var fn = featureLayer.getFilter()</code></pre><p><em>Returns</em> the filter function.</p>
<h3 id="section-featurelayer-setgeojson">featureLayer.setGeoJSON(geojson)</h3>
<p>Set the contents of a markers layer: run the provided
features through the filter function and then through the factory function to create elements
for the map. If the layer already has features, they are replaced with the new features.
An empty array will clear the layer of all features.</p>
<table>
<thead>
<tr>
<th>Options</th>
<th>Val