@args('-k', '--key', dest='key', metavar='<key>', help='public key string or file',
default=None)
@args('-s', '--slices', dest='slices', metavar='<slices>', help='slice xrns',
default='', type="str", action='callback', callback=optparse_listvalue_callback)
@args('-r', '--researchers', dest='researchers', metavar='<researchers>', help='slice researchers',
default='', type="str", action='callback', callback=optparse_listvalue_callback)
@args('-k', '--key', dest='key', metavar='<key>', help='public key string or file',
default=None)
@args('-s', '--slices', dest='slices', metavar='<slices>', help='slice xrns',
default='', type="str", action='callback', callback=optparse_listvalue_callback)
@args('-r', '--researchers', dest='researchers', metavar='<researchers>', help='slice researchers',
default='', type="str", action='callback', callback=optparse_listvalue_callback)