code: public void supportsFeatures(String baseUrl, WmsService.WmsVersion version, final String typeName,
  			final Callback<WfsFeatureTypeDescriptionInfo, String> callback) {
  		wmsService.describeLayer(baseUrl, typeName, version, new Callback<WmsDescribeLayerInfo, String>() {
  
  			@Override
  			public void onSuccess(WmsDescribeLayerInfo describeLayerInfo) {
  				String wfsUrl = null;
  				for (WmsLayerDescriptionInfo layerDescription : describeLayerInfo.getLayerDescriptions()) {
  					if (layerDescription.getWfs() != null) {
  						wfsUrl = layerDescription.getWfs();
  						break;
  					} else if (layerDescription.getOwsType() == WmsLayerDescriptionInfo.WFS) {
  						wfsUrl = layerDescription.getOwsUrl();
  						break;
  					}
  				}
  				if (wfsUrl != null) {
  					// we need an extra call for the schema !!!
  					WfsServerExtension.getInstance().getWfsService()
  							.describeFeatureType(WfsVersion.V1_0_0, wfsUrl, typeName, callback);
  				} else {
  					callback.onFailure("No WFS in layer description");
  				}
  			}
  
  			@Override
  			public void onFailure(String reason) {
  				callback.onFailure(reason);
  			}
  		});
  	}
docs: Find out if a certain WMS layer has support for features through WFS. If successful the WFS configuration will be
  returned.
  
  @param baseUrl The base URL to the WMS service.
  @param layerId The name of the layer.
  @param callback Callback that will be given the answer through the associated layer configuration.