+ /**
+ * Get the worker given its id.
+ *
+ * @param workerId - The worker id.
+ * @returns The worker if found in the pool worker nodes, `undefined` otherwise.
+ */
+ private getWorkerById (workerId: number): Worker | undefined {
+ return this.workerNodes.find(workerNode => workerNode.info.id === workerId)
+ ?.worker
+ }
+