@Test
public void whenHeaderRetryAfterIsAlphabeticalThenParsingFailsSilently() {

    // Given a retry_after header that contains an alphabetical value
    Header header = new Header(HeaderConstants.HEADER_RETRY_AFTER, "2.1a");
    // Given a response
    Response response = new Response(new Request());
    // When I copy the retry_after header to the response
    HeaderUtils.copyResponseTransportHeaders(new Series<>(Header.class, Collections.singletonList(header)), response);
    // Then the response does not contain a retry_after header
    assertNull(response.getRetryAfter());
}