@Override
    public int hashCode() {
        return new HashCodeBuilder().append(headerName).append(headerValue).append(applyTo).append(overwrite)
                .append(additionalProperties).toHashCode();
    }
Overwrite Existing
<p>


@param overwrite The overwrite
plugins/simple-header-policy/src/main/java/io/apiman/plugins/simpleheaderpolicy/beans/AddHeaderBean.java