### Question:
IfMatchPreconditionHeader implements PreconditionHeader<EntityTag> { @Override public String getValue() { return entityTagsToMatch.toString(); } private  IfMatchPreconditionHeader(final EntityTagMatchers entityTagsToMatch); @Override String getKey(); @Override String getValue(); @Override boolean meetsConditionFor(@Nullable final EntityTag entityTag); static Optional<IfMatchPreconditionHeader> fromDittoHeaders(final DittoHeaders dittoHeaders);  }### Answer:
@Test public void getValue() { final IfMatchPreconditionHeader ifMatchPreconditionHeader = createIfMatchPreconditionHeader(fromCommaSeparatedString("\"4711\"")); assertThat(ifMatchPreconditionHeader.getValue()).isEqualTo("\"4711\""); }