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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 register_domain(self, domain=0, tokenizer=None, trie=None):
 """ Register a domain with the intent engine. Args: tokenizer(tokenizer):
 The tokenizer you wish to use. trie(Trie):
 the Trie() you wish to use. domain(str):
 a string representing the domain you wish to add """

        self.domains[domain] = IntentDeterminationEngine(
            tokenizer=tokenizer, trie=trie)