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