public static ProxyProvider.TypeSpec builder() {
		return new ProxyProvider.Build();
	}
@Test
	void shouldNotCreateProxyProviderWithMissingRemoteHostInfo() {
		ProxyProvider.Build builder = (ProxyProvider.Build) ProxyProvider.builder().type(ProxyProvider.Proxy.HTTP);
		assertThatIllegalArgumentException()
				.isThrownBy(builder::build)
				.withMessage("Neither address nor host is specified");
	}