Example OperationDefinition/Resource-add (XML)
Raw XML (canonical form + also see XML Format Specification)
Operation Definition
<?xml version="1.0" encoding="UTF-8"?>
<OperationDefinition xmlns="http://hl7.org/fhir">
<id value="Resource-add"/>
<text>
<status value="extensions"/>
<div xmlns="http://www.w3.org/1999/xhtml">
<p> URL: [base]/Resource/[id]/$add</p>
<p> Parameters</p>
<table class="grid">
<tr>
<td>
<b> Use</b>
</td>
<td>
<b> Name</b>
</td>
<td>
<b> Cardinality</b>
</td>
<td>
<b> Type</b>
</td>
<td>
<b> Binding</b>
</td>
<td>
<b> Documentation</b>
</td>
</tr>
<tr>
<td> IN</td>
<td> additions</td>
<td> 1..1</td>
<td>
<a href="resource.html">Resource</a>
</td>
<td/>
<td>
<div>
<p> Resource containing content to add. See
<a href="operations-for-large-resources.html">Operations for Large Resources</a> .
</p>
</div>
</td>
</tr>
<tr>
<td> OUT</td>
<td> return</td>
<td> 0..1</td>
<td>
<a href="resource.html">Resource</a>
</td>
<td/>
<td>
<div>
<p> Resource containing content added. See
<a href="operations-for-large-resources.html">Operations for Large Resources</a> .
</p>
</div>
</td>
</tr>
</table>
<div/>
</div>
</text>
<extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
<valueInteger value="0"/>
</extension>
<extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
<valueCode value="trial-use"/>
</extension>
<url value="http://hl7.org/fhir/OperationDefinition/Resource-add"/>
<version value="5.0.0-ballot"/>
<name value="Add"/>
<title value="Add to an array in a large resource"/>
<status value="draft"/>
<kind value="operation"/>
<experimental value="false"/>
<date value="2022-09-10T04:52:37+10:00"/>
<publisher value="HL7 (FHIR Project)"/>
<contact>
<telecom>
<system value="url"/>
<value value="http://hl7.org/fhir"/>
</telecom>
<telecom>
<system value="email"/>
<value value="fhir@lists.hl7.org"/>
</telecom>
</contact>
<description value="Add content to an array in a large resource such as List or Group. See [Operations
for Large Resources](operations-for-large-resources.html)."/>
<affectsState value="true"/>
<code value="add"/>
<resource value="Resource"/>
<system value="false"/>
<type value="false"/>
<instance value="true"/>
<parameter>
<name value="additions"/>
<use value="in"/>
<min value="1"/>
<max value="1"/>
<documentation value="Resource containing content to add. See [Operations for Large Resources](operations-for-large
-resources.html)."/>
<type value="Resource"/>
</parameter>
<parameter>
<name value="return"/>
<use value="out"/>
<min value="0"/>
<max value="1"/>
<documentation value="Resource containing content added. See [Operations for Large Resources](operations-for-large-
resources.html)."/>
<type value="Resource"/>
</parameter>
</OperationDefinition>
Usage note: every effort has been made to ensure that the
examples are correct and useful, but they are not a normative part
of the specification.