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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 process_value(self, value):
 """Process publication value """

        # UID -> SuperModel
        if api.is_uid(value):
            return self.to_super_model(value)
        # Content -> SuperModel
        elif api.is_object(value):
            return self.to_super_model(value)
        # String -> Unicode
        elif isinstance(value, basestring):
            return safe_unicode(value).encode("utf-8")
        # DateTime -> DateTime
        elif isinstance(value, DateTime):
            return value
        # Process list values
        elif isinstance(value, (LazyMap, list, tuple)):
            return map(self.process_value, value)
        # Process dict values
        elif isinstance(value, (dict)):
            return {k: self.process_value(v) for k, v in value.iteritems()}
        # Process function
        elif safe_callable(value):
            return self.process_value(value())
        # Always return the unprocessed value last
        return value