code: function (service) {
        let s
        const ns = _.values(this.namespaces)
        if (!ns || !ns.length) {
          return s
        }
  
        for (let i = 0; i < ns.length; i++) {
          const n = ns[i]
          if (n.services[service]) {
            s = n.services[service]
            break
          }
        }
  
        return s
      }
docs: Returns the utility descriptor for the service given a servie name.
  Assumes there are no duplicate service names within the definition.
  @param {String} service name of the service
  @return {Object} service utility descriptor
  @memberof descriptor
  @example
  const grpcinspect = require('grpc-inspect')
  const grpc = require('grpc')
  const pbpath = path.resolve(__dirname, './route_guide.proto')
  const proto = grpc.load(pbpath)
  const d = grpcinspect(proto)
  console.dir(d.service('RouteGuide'))