@SuppressWarnings("nls")
    @Override
    protected void doApply(ApiRequest request, IPolicyContext context, DeletedPluginPolicyBean config,
            IPolicyChain<ApiRequest> chain) {
        System.out.println("Executing v1 of DeletedPluginPolicy.");
        request.getHeaders().put("X-DeletedPluginPolicy-Version", "v1");
        super.doApply(request, context, config, chain);
    }
@see io.apiman.gateway.engine.policies.AbstractMappedPolicy#doApply(io.apiman.gateway.engine.beans.ApiRequest, io.apiman.gateway.engine.policy.IPolicyContext, java.lang.Object, io.apiman.gateway.engine.policy.IPolicyChain)
manager/test/api/src/test/resources/sample-data/deleted-policy-plugin-v1/src/main/java/io/apiman/test/plugins/DeletedPluginPolicy.java