code: private Metric<Double> findCounter(@PathVariable("name") String name) {
  		@SuppressWarnings("unchecked")
  		Metric<Double> c = (Metric<Double>) metricRepository.findOne(COUNTER_PREFIX + name);
  		if (c == null) {
  			throw new NoSuchMetricException(name);
  		}
  		return c;
  	}
docs: Find a given counter, taking care of name conversion between the Spring Boot domain and our domain.
  
  @param name name
  @return counter
  @throws NoSuchMetricException if the counter does not exist