public Builder withWorkerNamePrefix(String workerNamePrefix) {
            this.workerNamePrefix = workerNamePrefix;
            return this;
        }
@param workerNamePrefix prefix to be used for worker names, defaults to workflow-worker-
    if not supplied.
@return Returns the current instance.
client/src/main/java/com/netflix/conductor/client/automator/TaskRunnerConfigurer.java