code: public void normalizeName(Key key, String fullyQualifiedName) {
          Value value = fields.remove(key);
          if (value == null) {
              throw new IllegalStateException("Could not find option for key=" + key);
          }
          Key newKey;
          if (fullyQualifiedName.startsWith(".")) {
              // TODO: we should not use format with leading dot internally
              newKey = Key.extension(fullyQualifiedName.substring(1));
          } else {
              newKey = Key.extension(fullyQualifiedName);
          }
          fields.put(newKey, value);
      }
docs: Change option name to its fully qualified name.