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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 validate_schema(cls, tx):
 """Validate the validator election vote transaction. Since `VOTE` extends `TRANSFER` transaction, all the validations for `CREATE` transaction should be inherited """

        _validate_schema(TX_SCHEMA_COMMON, tx)
        _validate_schema(TX_SCHEMA_TRANSFER, tx)
        _validate_schema(cls.TX_SCHEMA_CUSTOM, tx)