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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 diff_args(subparsers):
 """Add command line options for the diff operation"""

    diff_parser = subparsers.add_parser('diff')
    secretfile_args(diff_parser)
    vars_args(diff_parser)
    base_args(diff_parser)
    thaw_from_args(diff_parser)