@Test
void loadConfigFromEnvVarsUnrecognisedValuesNoException() throws Exception {

    ConfigManager.Builder builder = new ConfigManager.Builder(new String[]{});
    ConfigManager configManager = builder.loadConfigFromEnvironmentVariables(
            ImmutableMap.of("UNKNOWN-KEY", "5"), ImmutableSet.of(TestConfig.class)
    ).build();
    configManager.getConfig(TestConfig.class);
}