<tr><td style="white-space: nowrap"><a href="http://hl7.org/fhir/R4/conformance-rules.html#ismodifier">Is Modifier</a></td><td>false</td></tr><tr><td style="white-space: nowrap"><a href="http://hl7.org/fhir/R4/search.html#summary">Résumé</a></td><td>false</td></tr><tr><td style="white-space: nowrap">Invariants</td><td><b title="Formal Invariant Identifier">ele-1</b>: All FHIR elements must have a @value or children (<code>hasValue() or (children().count() &gt; id.count())</code>)<br/><b title="Formal Inva