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<!DOCTYPE html>
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<head>
<title>DataSource Protocol Reference</title>
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<article class="main-content">
<section class="section">
<div class="section-content top-matter">
<h1>DataSource</h1>
<div class="declaration">
<div class="language">
<pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">protocol</span> <span class="kt">DataSource</span></code></pre>
</div>
</div>
<p>A protocol describing a type that listens for changes in an underlying data set (powered by a <code><a href="../Protocols/DataContext.html">DataContext</a></code>) that match
a given set of conditions, if necessary. Conforming declarations should invoke the <code>onChange</code> closure when results
happen to change.</p>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L17-L88">Show on GitHub</a>
</div>
</div>
</section>
<section class="section">
<div class="section-content">
<div class="task-group">
<ul class="item-container">
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP15OnChangeClosurea"></a>
<a name="//apple_ref/swift/Alias/OnChangeClosure" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP15OnChangeClosurea">OnChangeClosure</a>
</code>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Describes a type of closure that is used as a communication channel for letting the owner know about object and
section changes in the matched data set.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">typealias</span> <span class="kt">OnChangeClosure</span> <span class="o">=</span> <span class="p">([</span><span class="kt"><a href="../Enums/DataSourceChange.html">DataSourceChange</a></span><span class="p">],</span> <span class="p">[</span><span class="kt"><a href="../Enums/DataSourceSectionChange.html">DataSourceSectionChange</a></span><span class="p">])</span> <span class="o">-></span> <span class="kt">Void</span></code></pre>
</div>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L22">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP9ModelTypeQa"></a>
<a name="//apple_ref/swift/Alias/ModelType" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP9ModelTypeQa">ModelType</a>
</code>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>A generic alias for the underlying type of model object matched and managed by the data source.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">associatedtype</span> <span class="kt">ModelType</span> <span class="p">:</span> <span class="kt"><a href="../Protocols/DataObject.html">DataObject</a></span><span class="p">,</span> <span class="kt">Hashable</span></code></pre>
</div>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L25">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP15numberOfObjectsSivp"></a>
<a name="//apple_ref/swift/Property/numberOfObjects" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP15numberOfObjectsSivp">numberOfObjects</a>
</code>
<span class="declaration-note">
Default implementation
</span>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>A number of all objects matched in the data set, if fetched. Otherwise this should be <code>0</code>.</p>
</div>
<h4>Default Implementation</h4>
<div class="default_impl abstract">
<p>If not implemented, this returns the <code>count</code> of <code>allObjects</code>.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="k">var</span> <span class="nv">numberOfObjects</span><span class="p">:</span> <span class="kt">Int</span> <span class="p">{</span> <span class="k">get</span> <span class="p">}</span></code></pre>
</div>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L28">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP10allObjectsSay9ModelTypeQzGvp"></a>
<a name="//apple_ref/swift/Property/allObjects" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP10allObjectsSay9ModelTypeQzGvp">allObjects</a>
</code>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>An array of all objects in the matched data set, if fetched. Otherwise this should be empty.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="k">var</span> <span class="nv">allObjects</span><span class="p">:</span> <span class="p">[</span><span class="kt"><a href="../Protocols/DataSource.html#/s:8Flapjack10DataSourceP9ModelTypeQa">ModelType</a></span><span class="p">]</span> <span class="p">{</span> <span class="k">get</span> <span class="p">}</span></code></pre>
</div>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L30">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP7objects7Combine12AnyPublisherVySay9ModelTypeQzGs5NeverOGvp"></a>
<a name="//apple_ref/swift/Property/objects" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP7objects7Combine12AnyPublisherVySay9ModelTypeQzGs5NeverOGvp">objects</a>
</code>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Combine publisher of the current array of objects</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="k">var</span> <span class="nv">objects</span><span class="p">:</span> <span class="kt">AnyPublisher</span><span class="o"><</span><span class="p">[</span><span class="kt"><a href="../Protocols/DataSource.html#/s:8Flapjack10DataSourceP9ModelTypeQa">ModelType</a></span><span class="p">],</span> <span class="kt">Never</span><span class="o">></span> <span class="p">{</span> <span class="k">get</span> <span class="p">}</span></code></pre>
</div>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L32">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP16numberOfSectionsSivp"></a>
<a name="//apple_ref/swift/Property/numberOfSections" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP16numberOfSectionsSivp">numberOfSections</a>
</code>
<span class="declaration-note">
Default implementation
</span>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>The number of sections detected in the matched data set, if grouped by section. Otherwise, this should be <code>1</code>.</p>
</div>
<h4>Default Implementation</h4>
<div class="default_impl abstract">
<p>If not implemented, this assumes there is only one section.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="k">var</span> <span class="nv">numberOfSections</span><span class="p">:</span> <span class="kt">Int</span> <span class="p">{</span> <span class="k">get</span> <span class="p">}</span></code></pre>
</div>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L34">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP12sectionNamesSaySSGvp"></a>
<a name="//apple_ref/swift/Property/sectionNames" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP12sectionNamesSaySSGvp">sectionNames</a>
</code>
<span class="declaration-note">
Default implementation
</span>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Any full section titles for the sections found in the data set, if relevant.</p>
</div>
<h4>Default Implementation</h4>
<div class="default_impl abstract">
<p>If not implemented, this assumes no section names are needed.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="k">var</span> <span class="nv">sectionNames</span><span class="p">:</span> <span class="p">[</span><span class="kt">String</span><span class="p">]</span> <span class="p">{</span> <span class="k">get</span> <span class="p">}</span></code></pre>
</div>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L36">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP18sectionIndexTitlesSaySSGvp"></a>
<a name="//apple_ref/swift/Property/sectionIndexTitles" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP18sectionIndexTitlesSaySSGvp">sectionIndexTitles</a>
</code>
<span class="declaration-note">
Default implementation
</span>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Any abbreviated section titles for the sections found in the data set, if relevant.</p>
</div>
<h4>Default Implementation</h4>
<div class="default_impl abstract">
<p>If not implemented, this assumes no section index titles are needed.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="k">var</span> <span class="nv">sectionIndexTitles</span><span class="p">:</span> <span class="p">[</span><span class="kt">String</span><span class="p">]</span> <span class="p">{</span> <span class="k">get</span> <span class="p">}</span></code></pre>
</div>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L38">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP8onChangeySayAA0bcE0OG_SayAA0bc7SectionE0OGtcSgvp"></a>
<a name="//apple_ref/swift/Property/onChange" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP8onChangeySayAA0bcE0OG_SayAA0bc7SectionE0OGtcSgvp">onChange</a>
</code>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>A retained closure that is invoked when section and/or object changes are detected in the matched data set.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="k">var</span> <span class="nv">onChange</span><span class="p">:</span> <span class="kt"><a href="../Protocols/DataSource.html#/s:8Flapjack10DataSourceP15OnChangeClosurea">OnChangeClosure</a></span><span class="p">?</span> <span class="p">{</span> <span class="k">get</span> <span class="k">set</span> <span class="p">}</span></code></pre>
</div>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L40">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP14startListeningyyF"></a>
<a name="//apple_ref/swift/Method/startListening()" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP14startListeningyyF">startListening()</a>
</code>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Tells the data source to perform its operation and retain the matching results.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">startListening</span><span class="p">()</span></code></pre>
</div>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L43">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP15numberOfObjects2inS2i_tF"></a>
<a name="//apple_ref/swift/Method/numberOfObjects(in:)" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP15numberOfObjects2inS2i_tF">numberOfObjects(in:<wbr>)</a>
</code>
<span class="declaration-note">
Default implementation
</span>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Provides a count of the number of objects in the section at a given section index. If the given section index
exceeds the known bounds of possible sections, <code>0</code> should be returned.</p>
</div>
<h4>Default Implementation</h4>
<div class="default_impl abstract">
<p>If not implemented, this returns the same value as <code>numberOfObjects</code>.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">numberOfObjects</span><span class="p">(</span><span class="k">in</span> <span class="nv">section</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="o">-></span> <span class="kt">Int</span></code></pre>
</div>
</div>
<div>
<h4>Parameters</h4>
<table class="graybox">
<tbody>
<tr>
<td>
<code>
<em>section</em>
</code>
</td>
<td>
<div>
<p>The index of the section to use in the lookup.</p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<div>
<h4>Return Value</h4>
<p>The number of objects in that given section.</p>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L52">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP6object2at9ModelTypeQzSg10Foundation9IndexPathV_tF"></a>
<a name="//apple_ref/swift/Method/object(at:)" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP6object2at9ModelTypeQzSg10Foundation9IndexPathV_tF">object(at:<wbr>)</a>
</code>
<span class="declaration-note">
Default implementation
</span>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Provides the object matching the given index path, if found. If not found, this should return <code>nil</code>.</p>
</div>
<h4>Default Implementation</h4>
<div class="default_impl abstract">
<p>If not implemented, this uses the <code>item</code> index to lookup the object in <code>allObjects</code>.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">object</span><span class="p">(</span><span class="n">at</span> <span class="nv">indexPath</span><span class="p">:</span> <span class="kt">IndexPath</span><span class="p">)</span> <span class="o">-></span> <span class="kt"><a href="../Protocols/DataSource.html#/s:8Flapjack10DataSourceP9ModelTypeQa">ModelType</a></span><span class="p">?</span></code></pre>
</div>
</div>
<div>
<h4>Parameters</h4>
<table class="graybox">
<tbody>
<tr>
<td>
<code>
<em>indexPath</em>
</code>
</td>
<td>
<div>
<p>The index path to use in the lookup.</p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<div>
<h4>Return Value</h4>
<p>The object, if one is found at the given index path.</p>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L60">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP9indexPath3for10Foundation05IndexE0VSg9ModelTypeQzSg_tF"></a>
<a name="//apple_ref/swift/Method/indexPath(for:)" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP9indexPath3for10Foundation05IndexE0VSg9ModelTypeQzSg_tF">indexPath(for:<wbr>)</a>
</code>
<span class="declaration-note">
Default implementation
</span>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Provides the index path where the given object resides in the matched data set, if found. If not found, this
should return <code>nil</code>.</p>
</div>
<h4>Default Implementation</h4>
<div class="default_impl abstract">
<p>If not implemented, only returns the index of the object in <code>allObjects</code>, and 0 for the section index.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">indexPath</span><span class="p">(</span><span class="k">for</span> <span class="nv">object</span><span class="p">:</span> <span class="kt"><a href="../Protocols/DataSource.html#/s:8Flapjack10DataSourceP9ModelTypeQa">ModelType</a></span><span class="p">?)</span> <span class="o">-></span> <span class="kt">IndexPath</span><span class="p">?</span></code></pre>
</div>
</div>
<div>
<h4>Parameters</h4>
<table class="graybox">
<tbody>
<tr>
<td>
<code>
<em>object</em>
</code>
</td>
<td>
<div>
<p>The object to use in the lookup.</p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<div>
<h4>Return Value</h4>
<p>The index path, if found for the given object.</p>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L69">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP11firstObject8matching9ModelTypeQzSgSbAGXE_tF"></a>
<a name="//apple_ref/swift/Method/firstObject(matching:)" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP11firstObject8matching9ModelTypeQzSgSbAGXE_tF">firstObject(matching:<wbr>)</a>
</code>
<span class="declaration-note">
Default implementation
</span>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Provides the first object matching a given closure-based query, if found. If not found, this should return <code>nil</code>.
This function should short circuit and return immediately as soon as a result is found.</p>
</div>
<h4>Default Implementation</h4>
<div class="default_impl abstract">
<p>If not implemented, returns the first matching object from the <code>allObjects</code> array.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">firstObject</span><span class="p">(</span><span class="nv">matching</span><span class="p">:</span> <span class="p">(</span><span class="kt"><a href="../Protocols/DataSource.html#/s:8Flapjack10DataSourceP9ModelTypeQa">ModelType</a></span><span class="p">)</span> <span class="o">-></span> <span class="kt">Bool</span><span class="p">)</span> <span class="o">-></span> <span class="kt"><a href="../Protocols/DataSource.html#/s:8Flapjack10DataSourceP9ModelTypeQa">ModelType</a></span><span class="p">?</span></code></pre>
</div>
</div>
<div>
<h4>Parameters</h4>
<table class="graybox">
<tbody>
<tr>
<td>
<code>
<em>matching</em>
</code>
</td>
<td>
<div>
<p>The closure to use as a query; will be passed each model in the matched data set.</p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<div>
<h4>Return Value</h4>
<p>The first object matching the query, if one as found.</p>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L78">Show on GitHub</a>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:8Flapjack10DataSourceP10allObjects8matchingSay9ModelTypeQzGSbAGXE_tF"></a>
<a name="//apple_ref/swift/Method/allObjects(matching:)" class="dashAnchor"></a>
<a class="token" href="#/s:8Flapjack10DataSourceP10allObjects8matchingSay9ModelTypeQzGSbAGXE_tF">allObjects(matching:<wbr>)</a>
</code>
<span class="declaration-note">
Default implementation
</span>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Provides the objects matching a given closure-based query, if found. If not found, this should return an empty
array.</p>
</div>
<h4>Default Implementation</h4>
<div class="default_impl abstract">
<p>If not implemented, returns all matching objects from the <code>allObjects</code> array.</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">allObjects</span><span class="p">(</span><span class="nv">matching</span><span class="p">:</span> <span class="p">(</span><span class="kt"><a href="../Protocols/DataSource.html#/s:8Flapjack10DataSourceP9ModelTypeQa">ModelType</a></span><span class="p">)</span> <span class="o">-></span> <span class="kt">Bool</span><span class="p">)</span> <span class="o">-></span> <span class="p">[</span><span class="kt"><a href="../Protocols/DataSource.html#/s:8Flapjack10DataSourceP9ModelTypeQa">ModelType</a></span><span class="p">]</span></code></pre>
</div>
</div>
<div>
<h4>Parameters</h4>
<table class="graybox">
<tbody>
<tr>
<td>
<code>
<em>matching</em>
</code>
</td>
<td>
<div>
<p>The closure to use as a query; will be passed each model in the matched data set.</p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<div>
<h4>Return Value</h4>
<p>All objects matching the query, if any as found.</p>
</div>
<div class="slightly-smaller">
<a href="https://github.com/oreillymedia/flapjack/tree/master/Sources/Core/DataSource.swift#L87">Show on GitHub</a>
</div>
</section>
</div>
</li>
</ul>
</div>
</div>
</section>
</article>
</div>
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<p>© 2023 <a class="link" href="https://oreilly.com" target="_blank" rel="external noopener">O'Reilly Media, Inc.</a>. All rights reserved. (Last updated: 2023-05-18)</p>
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