@Override
    public void apply(ApiRequest request, IPolicyContext context, Object config,
            IPolicyChain<ApiRequest> chain) {
        request.getHeaders().put("X-SimpleHttpHeaderPolicy-1", "foo");
        request.getHeaders().put("X-SimpleHttpHeaderPolicy-2", "bar");
        chain.doApply(request);
    }
@see io.apiman.gateway.engine.policy.IPolicy#apply(io.apiman.gateway.engine.beans.ApiRequest, io.apiman.gateway.engine.policy.IPolicyContext, java.lang.Object, io.apiman.gateway.engine.policy.IPolicyChain)
gateway/test/src/test/java/io/apiman/gateway/test/policies/SimpleHttpHeaderPolicy.java