def METHOD_NAME(self, key):
    index = self.s_hash(key)
    original_index = index
    while self.data_[index].get_key() != None:
        if self.data_[index].get_key() == key:
            self.data_[index].set_as_dummy()
            break
        index = (index + 1) % self.size_
        if index == original_index:
            break