@Test
public void constructBuilderFromHeadersWorksExpected() {

    final DittoHeaders dittoHeaders = underTest.correlationId(CORRELATION_ID)
            .readSubjects(READ_SUBJECTS)
            .schemaVersion(JSON_SCHEMA_VERSION)
            .build();
    final DittoHeaders anotherDittoHeaders = of(dittoHeaders).build();
    assertThat(dittoHeaders).isEqualTo(anotherDittoHeaders);
}