code: public <T> EntityResponse<T> get(Class<T> entityClass, String path, Map<String, String> params) throws IOException, RESTException {
          return get(entityClass, path, params, null);
      }
docs: Performs GET request.
  
  @param entityClass Class, which contains expected response entity fields.
  @param path        Request path.
  @param params      Map of URL query params.
  @param <T>         Type of class, which contains expected response entity fields.
  @throws IOException   If error during HTTP connection or entity parsing occurs.
  @throws RESTException If HTTP response code is non OK.