public final RESPONSE process(ComponentSpecification chain, REQUEST request) {
        Chain<PROCESSOR> processingChain = getChain(chain);
        return doProcess(processingChain, request);
    }
Processes the given request with the given chain, and returns the response.

@param chain the specification of the chain to execute
@param request the request to process
@return a response
application/src/main/java/com/yahoo/application/container/ProcessingBase.java