Method locale

jaxrs2/src/main/java/feign/jaxrs2/JAXRSClient.java:111–115

(Map<String, Collection<String>> headers)

  }

  private String locale(Map<String, Collection<String>> headers) {
    if (!headers.containsKey(HttpHeaders.CONTENT_LANGUAGE)) return null;

    return headers.get(HttpHeaders.CONTENT_LANGUAGE).iterator().next();
  }

  private MediaType mediaType(Map<String, Collection<String>> headers) {
    if (!headers.containsKey(HttpHeaders.CONTENT_TYPE)) return null;