riant Identifier">ext-1</b>: Must have either extensions or value[x], not both (<code>extension.exists() != value.exists()</code>)</td></tr>
<tr><td style="white-space: nowrap"><a href="http://hl7.org/fhir/R4/profiling.html#slicing">Slicing</a></td><td>This element introduces a set of slices on <code>Extension.extension</code>. The slices areUnordered and Open, and can be differentiated using the following discriminators:<ul></ul><li>value @ url</li></td></tr>

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