### Question:
StatementOptionsBuilder { public static StatementOptionsBuilder enableTracing() { return new StatementOptionsBuilder().withEnableTracing(); } StatementOptionsBuilder(); static StatementOptionsBuilder consistencyLevel(ConsistencyLevel level); static StatementOptionsBuilder defaultTimestamp(long timestamp); static StatementOptionsBuilder disableTracing(); static StatementOptions empty(); static StatementOptionsBuilder enableTracing(); static StatementOptionsBuilder fetchSize(int size); static StatementOptionsBuilder retryPolicy(RetryPolicy policy); static StatementOptionsBuilder serialConsistencyLevel(ConsistencyLevel level); StatementOptions build(); StatementOptionsBuilder withConsistencyLevel(ConsistencyLevel level);  }### Answer:
@Test public void testEnableTracing() throws Exception { statement.disableTracing(); assertFalse(statement.isTracing()); StatementOptionsBuilder.enableTracing().build().applyTo(statement); assertTrue(statement.isTracing()); }