docs: public static String constructCanonicalCompositeIndexName(String[] components) {
          assert components.length > 1;
  
          StringBuilder builder = new StringBuilder(components.length * EXPECTED_AVERAGE_COMPONENT_NAME_LENGTH);
          for (String component : components) {
              if (builder.length() > 0) {
                  builder.append(", ");
              }
              builder.append(component);
          }
          return builder.toString();
      }