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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 encode(self, name, as_map_key=False):
 """Returns the name the first time and the key after that"""

        if name in self.key_to_value:
            return self.key_to_value[name]
        return self.encache(name) if is_cacheable(name, as_map_key) else name