def get_signature_validation_trytes(self):<EOL>
return (<EOL>self.address.address<EOL>+ self.value_as_trytes<EOL>+ self.legacy_tag<EOL>+ self.timestamp_as_trytes<EOL>+ self.current_index_as_trytes<EOL>+ self.last_index_as_trytes<EOL>)<EOL>
Returns the values needed to validate the transaction's
``signature_message_fragment`` value.