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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 RegisterRecordType(cls, record_class):
 """Register a known record type in KNOWN_CLASSES. Args: record_class (UpdateRecord):
 An update record subclass. """


        record_type = record_class.MatchType()
        if record_type not in UpdateRecord.KNOWN_CLASSES:
            UpdateRecord.KNOWN_CLASSES[record_type] = []

        UpdateRecord.KNOWN_CLASSES[record_type].append(record_class)