docs: private List<ParameterConverter> methodReturningConverters(final Class<?> type) {
          final List<ParameterConverter> converters = new ArrayList<>();
          for (final Method method : type.getMethods()) {
              if (method.isAnnotationPresent(AsParameterConverter.class)) {
                  converters.add(new MethodReturningConverter(method, type, this));
              }
          }
          return converters;
      }