code: function PushRoute (router, request, scheme, handler, limits, validate, upload) {
  		let args = [scheme, limits], filt = v=>!!v;
  		args = (!!validate ? args.concat([validate]).filter(filt) : args);
  		args = (!!upload   ? args.concat([upload  ]).filter(filt) : args);
  		args = args.concat([handler]); router[request](...args);
  	}
docs: /////////////////////////////////////////////////////////////////////////////////// ROUTE HANDLERS