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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def submit_combine(basename, readers, job_ids=None, project_name=None):
 """Submit a batch job to combine the outputs of a reading job. This function is provided for backwards compatibility. You should use the PmidSubmitter and submit_combine methods. """

    sub = PmidSubmitter(basename, readers, project_name)
    sub.job_list = job_ids
    sub.submit_combine()
    return sub