@Override
    public Collection<String> getXADriverClassNames() {
        return Collections.singletonList("org.h2.jdbcx.JdbcDataSource");
    }
@Test
    void assertGetXADriverClassName() {
        assertThat(new H2XADataSourceDefinition().getXADriverClassNames(), is(Collections.singletonList("org.h2.jdbcx.JdbcDataSource")));
    }