public void setAlternateIpHeaders(final String... alternateIpHeaders) {
        CommonHelper.assertNotNull("alternateIpHeaders", alternateIpHeaders);
        this.alternateIpHeaders = Arrays.asList(alternateIpHeaders);
    }
<p>Setter for the field <code>alternateIpHeaders</code>.</p>

@param alternateIpHeaders Sets alternate headers to search for IP.
                          The first match will be returned as specified for {@code enhanced for} iteration over arrays.
pac4j-http/src/main/java/org/pac4j/http/credentials/extractor/IpExtractor.java