def _UpdateOptions(self, parser):
    parser.add_option('--no_precompilation', action='store_false',
                      dest='precompilation', default=True,
                      help='Disable automatic Python precompilation.')
    parser.add_option('--backends', action='store_true',
                      dest='backends', default=False,
                      help='Update backends when performing appcfg update.')
Given a list of services, generates a permanent link at which the page
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/appcfg.py/AppCfgApp._UpdateOptions--crossover with--dataset/ETHPy150Open marineam/nagcat/railroad/railroad/permalink/views.py/generate_link