@Override
    public int hashCode() {
        return new HashCodeBuilder()
                .append(headerName)
                .append(overwriteHeaderValue)
                .append(responseHeader)
                .toHashCode();
    }
Whether to also set the header in the outgoing response.
plugins/unique-header-policy/src/main/java/io/apiman/plugins/uniqueheader/beans/UniqueHeaderBean.java