code: public boolean exists(String jobScheduleId, JobScheduleExistsOptions jobScheduleExistsOptions) {
          return existsWithServiceResponseAsync(jobScheduleId, jobScheduleExistsOptions).toBlocking().single().body();
      }
docs: Checks the specified job schedule exists.
  
  @param jobScheduleId The ID of the job schedule which you want to check.
  @param jobScheduleExistsOptions Additional parameters for the operation
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws BatchErrorException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the boolean object if successful.