### Question:
AccountCreatedEvent { public String getAccountId() { return accountId; } @ConstructorProperties({ "accountId" })  AccountCreatedEvent(String accountId); String getAccountId(); @Override boolean equals(final Object other); @Override int hashCode(); @Override String toString();  }### Answer:
@Test @DisplayName("contains the account id") void testContainsAccountId() { eventToTest = new AccountCreatedEvent(ACCOUNT_ID); assertEquals(ACCOUNT_ID, eventToTest.getAccountId()); }