      assertFalse(this.sqlgGraph.vertices().hasNext());</b>
&nbsp;    }
&nbsp;
&nbsp;    @Test
&nbsp;    public void shouldHaveExceptionConsistencyWhenUsingManualTransactionOnRollback() {
<b class="fc">&nbsp;        this.sqlgGraph.tx().onReadWrite(Transaction.READ_WRITE_BEHAVIOR.MANUAL);</b>
&nbsp;        try {
<b class="fc">&nbsp;            this.sqlgGraph.tx().rollback();</b>
<b class="nc">&nbsp;            fail(&quot;An exception should be thrown when read/write behavior is manual and no transaction is o