6 files declare their use of TransactionInterface in Transaction 8

BalanceTransactor.php in src/Plugin/Transaction/BalanceTransactor.php

GenericTransactor.php in src/Plugin/Transaction/GenericTransactor.php

transaction.module in ./transaction.module

Transaction.php in src/Entity/Transaction.php

TransactionExecute.php in src/Plugin/RulesAction/TransactionExecute.php

TransactionExecutionEvent.php in src/Event/TransactionExecutionEvent.php