**** The HTTP Pipeline that 'HttpPipelineFilters' should be contributed to. The terminator at the ** end of the pipeline is the default routing service.**** Example:** ** pre>** @Contribute { serviceType=HttpPipeline# }** static Void contributeHttpPipeline(OrderedConfig conf) {** ** conf.addOrdered("HttpRequestLogFilter", conf.autobuild(HttpRequestLogFilter#), ["after: BedSheetFilters"])** ** }** ** <preconstmixin HttpPipeline {abstract Bool service()}** A filter for HTTP requests.constmixin HttpPipelineFilter {** Return 'true' if the this filter handled the requestabstract Bool service(HttpPipeline handler)}