code: public void patchJob(String jobId, PoolInformation poolInfo) throws BatchErrorException, IOException {
          patchJob(jobId, poolInfo, null, null, null, null, null);
      }
docs: Updates the specified job.
  This method only replaces the properties specified with non-null values.
  
  @param jobId The ID of the job.
  @param poolInfo The pool on which the Batch service runs the job's tasks. You may change the pool for a job only when the job is disabled. If you specify an autoPoolSpecification specification in the poolInfo, only the keepAlive property can be updated, and then only if the auto pool has a poolLifetimeOption of job. If null, the job continues to run on its current pool.
  @throws BatchErrorException Exception thrown when an error response is received from the Batch service.
  @throws IOException Exception thrown when there is an error in serialization/deserialization of data sent to/received from the Batch service.