code: public static String JsonFromFeature(EsriFeature feature) throws JsonGenerationException, JsonMappingException, IOException{
  		return jsonObjectMapper.writeValueAsString(feature);
  	}
docs: Create JSON from an {@link com.esri.json.EsriFeature}
  
  @param feature feature to convert to JSON
  @return JSON string representing the given feature
  @throws JsonGenerationException
  @throws JsonMappingException
  @throws IOException