def _get(path, args = {})
      path.sub! /\A\//, ''
      args['wt'] = 'json'
      res        = JSON.parse(raw_get_content(path, args))
      if res['error']
        raise RuntimeError.new, res['error']
      end
      res
    end
def _get(path, args = {})
      path.sub! /\A\//, ''
      args['wt'] = 'json'
      res        = JSON.parse(raw_get_content(path, args))
      if res['error']
        raise RuntimeError.new, res['error']
      end
      res
    end
A basic get to the instance (not any specific core)
 @param [String] path The parts of the URL that comes after the core
 @param [Hash] args The url arguments
 @return [Hash] the parsed-out response