docs: public static MetricName name(String name, String... names) {
          final int length;
  
          if (names == null) {
              length = 0;
          } else {
              length = names.length;
          }
  
          final String[] parts = new String[length + 1];
          parts[0] = name;
  
          System.arraycopy(names, 0, parts, 1, length);
  
          return MetricName.build(parts);
      }