def __init__(self, el=None):
        if el:
            self.merge(el)
Generates a change list for deleting an exploration from a collection.
dataset/ETHPy150Open edgewall/trac/contrib/sourceforge2trac.py/FlatXML.__init__--crossover with--dataset/ETHPy150Open oppia/oppia/core/domain/collection_services_test.py/_get_deleted_exploration_change_list