@Override
  public void close() {
    Util.ensureClosed(body);
  }
Returns a charset object based on the requests content type. Defaults to UTF-8 See <a
href="https://datatracker.ietf.org/doc/html/rfc7231#section-5.3.3">rfc7231 - Accept-Charset</a>
See <a href="https://datatracker.ietf.org/doc/html/rfc7231#section-3.1.1.1">rfc7231 - Media
Type</a>
core/src/main/java/feign/Response.java