docs: private <T> InternalProviderImpl installInternalProvider(Class<T> clazz, String bindingName, InternalProviderImpl<? extends T> internalProvider,
        boolean isBound, boolean isTestProvider) {
      if (bindingName == null) {
        if (isBound) {
          return installUnNamedProvider(mapClassesToUnNamedBoundProviders, clazz, internalProvider, isTestProvider);
        } else {
          return installUnNamedProvider(mapClassesToUnNamedUnBoundProviders, clazz, internalProvider, isTestProvider);
        }
      } else {
        return installNamedProvider(mapClassesToNamedBoundProviders, clazz, bindingName, internalProvider, isTestProvider);
      }
    }