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<h1>Changes</h1>
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<b>This page details the changes made in the current version only.</b>
<br>
Earlier changes are detailed in the <a href="changes_history.html">History of Previous Changes</a>.
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<h1>Version 5.2</h1>
<p>
Summary
</p>
<ul>
<li>
<a href="#New and Noteworthy">New and Noteworthy</a>
</li>
<li>
<a href="#Incompatible changes">Incompatible changes</a>
</li>
<li>
<a href="#Bug fixes">Bug fixes</a>
</li>
<li>
<a href="#Improvements">Improvements</a>
</li>
<li>
<a href="#Non-functional changes">Non-functional changes</a>
</li>
<li>
<a href="#Known problems and workarounds">Known problems and workarounds</a>
</li>
<li>
<a href="#Thanks">Thanks</a>
</li>
</ul>
<h2 class="ch_section" id="New and Noteworthy">New and Noteworthy</h2>
<p>
This release is a major release. Please see the <a href="changes_history.html">Changes history page</a>
to view the last release notes of version 5.1.1.
</p>
<h2 class="ch_section" id="Incompatible changes">Incompatible changes</h2>
<ul>
<li>HTTP(S) Test Script Recorder now appends number at end of names, while previously it added it at beginning. See <a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63450">
Bug
63450</a>
</li>
<li>When using XPath Assertion with an XPath expression returning a boolean, <span class="code">True if nothing matches</span> had no effect and always returned true, see <a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63455">
Bug
63455</a>
</li>
<li>XML parsing now refuses unsecure XML, this has impacts on the following features:
<ul>
<li>XMLAssertion</li>
<li>XMLSchemAssertion</li>
<li>XPath function</li>
<li>XPath 1 &amp; 2 Extractors</li>
<li>XPath 1 &amp; 2 Assertions</li>
</ul>
</li>
</ul>
<h2 class="ch_section" id="Improvements">Improvements</h2>
<h3>HTTP Samplers and Test Script Recorder</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63450">
Bug
63450</a>
-
HTTP(S) Test Script Recorder: Put number at end instead of beginning</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63790">
Bug
63790</a>
-
Embedded Resources download: Optimize CSS parsing by removing source location</li>
</ul>
<h3>Other samplers</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63406">
Bug
63406</a>
-
JDBC connection configuration: new option for pre-initialize to initialize the connection pool. Contributed by Franz Schwab (franz.schwab at exasol.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63561">
Bug
63561</a>
-
JDBC Request: Allow to only fetch a certain number of rows. Contributed by Franz Schwab (franz.schwab at exasol.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63801">
Bug
63801</a>
-
Add Bolt protocol support for Neo4j database. Contributed by GraphAware (www.graphaware.com)</li>
</ul>
<h3>Controllers</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63565">
Bug
63565</a>
-
If Controller: GC issue with JMeter during the endurance run when using with "Interpret Condition as Variable Expression?" unchecked =&gt; Improve documentation</li>
</ul>
<h3>Listeners</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63720">
Bug
63720</a>
-
BackendListener: InfluxDBBackendListenerClient Add support for InfluxDB 2. Contributed by Jakub Bedn&aacute;&#345; (https://github.com/bednar)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63770">
Bug
63770</a>
-
View Results Tree: Add JMESPath Tester. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
</ul>
<h3>Timers, Assertions, Config, Pre- &amp; Post-Processors</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=62863">
Bug
62863</a>
-
Enable PKCS11 keystores for usage with KeyStore Manager. Based on patch by Clifford Harms (clifford.harms at gmail.com).</li>
<li>
<a href="https://github.com/apache/jmeter/pull/457">
Pull request #457</a>
-
Slight performance improvement in PoissonRandomTimer by using ThreadLocalRandom. Based on a patch by Xia Li.</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=62787">
Bug
62787</a>
-
New <span class="code">XPath2 Assertion</span> supporting XPath2 with better performances than <span class="code">XPath Assertion</span>. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63643">
Bug
63643</a>
-
Skip BOM on files opened through <span class="code">FileServer</span> and use the BOM to detect the character encoding,
if none is given explicitly. Reported by Havlicek Honza (havlicek.honza at gmail.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63727">
Bug
63727</a>
-
New <span class="code">JMESPath Extractor</span> element to ease extraction from JSON using <a href="http://jmespath.org">JMESPath</a> technology. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63763">
Bug
63763</a>
-
New <span class="code">JMESPath Assertion</span> element to ease assertion on JSON using <a href="http://jmespath.org">JMESPath</a> technology. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63775">
Bug
63775</a>
-
Allow Boundary Extractor to accept empty boundaries</li>
</ul>
<h3>Functions</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63219">
Bug
63219</a>
-
New function <span class="code">__StringToFile</span> to save/append a string into a file. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>Use <span class="code">AtomicInteger</span> for <span class="code">__counter</span> instead of synchronization on our own</li>
</ul>
<h3>I18N</h3>
<ul>
</ul>
<h3>Report / Dashboard</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63471">
Bug
63471</a>
-
<span class="code">StringConverter</span>s used for report generation should ignore white space around numbers.</li>
</ul>
<h3>General</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63396">
Bug
63396</a>
-
JSR223 Test Elements: Description of Parameters is misleading, same for Script</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63480">
Bug
63480</a>
-
XPathAssertion and XPathAssertion2: Improve test coverage for input coming from variable. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63452">
Bug
63452</a>
-
Tools / Import from cURL: Complete coverage of all command line options that are valid in JMeter use case. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63419">
Bug
63419</a>
-
Tools / Import from cURL: Add ability to import a set of cURL commands from a file. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63760">
Bug
63760</a>
-
JOrphanUtils: add random alphanumeric password generator</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63355">
Bug
63355</a>
-
View Results Tree: Browser view option is not Available since Java 11, document how to make it available, see <a href="./usermanual/hints_and_tips.html#browser_renderer_view_results_tree">this</a>
</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=62861">
Bug
62861</a>
-
Thread Group: Provide ability to configure whether a new iteration is a new user or same user (Would be applied on Cookie Manager, Cache Manager and httpclient.reset_state_on_thread_group_iteration). Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63616">
Bug
63616</a>
-
Fix Javadoc: <pre class="source">JMeterContext#getThreadNum()</pre> starts at 0 and not 1. Contributed by Ori Marko (orimarko at gmail.com)</li>
<li>Updated to httpclient/httpmime 4.5.10 (from 4.5.7)</li>
<li>Updated to dnsjava 2.1.9 (from 2.1.8)</li>
<li>Updated to jsoup 1.12.1 (from 1.11.3)</li>
<li>Updated to rsyntaxtextarea 3.0.4 (from 3.0.2)</li>
<li>Updated to caffeine 2.8.0 (from 2.6.2)</li>
<li>Updated to commons-codec 1.13 (from 1.11)</li>
<li>Updated to commons-lang3 3.9 (from 3.8.1)</li>
<li>Updated to commons-pool 2.7 (from 2.6)</li>
<li>Updated to commons-text 1.8 (from 1.6)</li>
<li>Updated to freemarker 2.3.29 (from 2.3.28)</li>
<li>Updated to httpcore/httpcore-nio 4.12 (from 4.11)</li>
<li>Updated to jodd 5.0.13 (from 5.0.6)</li>
<li>Updated to log4j 2.12.1 (from 2.11.1)</li>
<li>Updated to ph-commons 9.3.7 (from 9.2.1)</li>
<li>Updated to ph-css 6.2.0 (from 6.1.1)</li>
<li>Updated to Mozilla Rhino 1.7.11 (from 1.7.10)</li>
<li>Updated to Saxon-HE 9.9.1-5 (from 9.9.1-1)</li>
<li>Updated to slf4j 1.7.28 (from 1.7.25)</li>
<li>Updated to tika-core and tika-parsers 1.22 (from 1.21)</li>
<li>Updated jackson-annotations, jackson-core and jackson-databind to 2.9.10 (from 2.9.8)</li>
</ul>
<h2 class="ch_section" id="Non-functional changes">Non-functional changes</h2>
<ul>
<li>Migrated from subversion to <a href="https://github.com/apache/jmeter">Git</a>
</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63630">
Bug
63630</a>
-
Switch build from Apache Ant to Gradle</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63529">
Bug
63529</a>
-
Add more unit tests for org.apache.jorphan.util.JOrphanUtils. Contributed by John Bergqvist(John.Bergqvist at diffblue.com)</li>
<li>Updated to latest checkstyle (version 8.22)</li>
<li>Clean-up of code in <span class="code">CompareAssertion</span> and other locations. Based on patch by Graham Russell (graham at ham1.co.uk)</li>
<li>
<a href="https://github.com/apache/jmeter/pull/491">
Pull request #491</a>
-
Increase Graphite metrics coverage. Contributed by Graham Russell (graham at ham1.co.uk)</li>
<li>
<a href="https://github.com/apache/jmeter/pull/520">
Pull request #520</a>
-
Replace anonymous classes with lambda expressions. Contributed by Graham Russell (graham at ham1.co.uk).</li>
<li>
<a href="https://github.com/apache/jmeter/pull/524">
Pull request #524</a>
-
Migration from JUnit 4 to JUnit 5. Contributed by Graham Russell (graham at ham1.co.uk).</li>
</ul>
<h2 class="ch_section" id="Bug fixes">Bug fixes</h2>
<h3>HTTP Samplers and Test Script Recorder</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63298">
Bug
63298</a>
-
HTTP Requests with encoded URLs are being sent in decoded format</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63364">
Bug
63364</a>
-
When setting <span class="code">subresults.disable_renaming=true</span>, sub results are still renamed using their parent SampleLabel while they shouldn't. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63129">
Bug
63129</a>
-
JMeter can not identify encoding during first time page submission. Based partly on analysis and PR made by Naveen Nandwani (naveen.nandwani at india.nec.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=62672">
Bug
62672</a>
-
HTTP Request sends double requests when using proxy with authentication. Based on patch by Artem Fedorov (artem.fedorov at blazemeter.com) and contributed by BlazeMeter.</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63574">
Bug
63574</a>
-
HTTP Cache Manager does not cache resource if <span class="code">Cache-Control</span> header is missing.</li>
</ul>
<h3>Other Samplers</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63442">
Bug
63442</a>
-
Reduce scanning for <span class="code">LogParser</span> implementations in AccessLogSamplerBeanInfo.</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63563">
Bug
63563</a>
-
LdapExtSampler: When sampler fails with exception differing from NamingException, no SampleResult is generated</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63469">
Bug
63469</a>
-
JMSPublisher: Race condition in jms.client.ClientPool#clearClient</li>
</ul>
<h3>Controllers</h3>
<ul>
</ul>
<h3>Listeners</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63319">
Bug
63319</a>
-
<span class="code">ArrayIndexOutOfBoundsException</span> in Aggregate Graph when selecting 90&nbsp;% or 95&nbsp;% columns</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63423">
Bug
63423</a>
-
Selection of table rows in Aggregate Graph gets lost too often</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63347">
Bug
63347</a>
-
View result tree: The search field is so small that even a single character is not visible on Windows 7</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63433">
Bug
63433</a>
-
ListenerNotifier: Detected problem in Listener NullPointerException if filename is null. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63674">
Bug
63674</a>
-
Strip results with subresults deeper in their hierarchy when DataStripping is enabled</li>
</ul>
<h3>Timers, Assertions, Config, Pre- &amp; Post-Processors</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63455">
Bug
63455</a>
-
XPath Assertion: <span class="code">True if nothing matches</span> does not work if XPath expression returns a boolean. Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
</ul>
<h3>Functions</h3>
<ul>
</ul>
<h3>I18N</h3>
<ul>
</ul>
<h3>Report / Dashboard</h3>
<ul>
</ul>
<h3>Documentation</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63513">
Bug
63513</a>
-
Add MariaDB examples to JDBC documentation. Contributed by Ori Marko (orimarko at gmail.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63484">
Bug
63484</a>
-
Add notes to use Apache Velocity as JSR223 script language. Based on a patch by Ori Marko (orimarko at gmail.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63519">
Bug
63519</a>
-
<a href="https://github.com/apache/jmeter/pull/471">
Pull request #471</a>
-
Use correct method <span class="code">getLabelResource()</span> in JMeter tutorial. Contributed by Sun Tao (buzzerrookie at hotmail.com&gt;)</li>
</ul>
<h3>General</h3>
<ul>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63394">
Bug
63394</a>
-
JMeter should fail with non-zero when test execution fails (due to missing test plan or other reason). Contributed by Ubik Load Pack (support at ubikloadpack.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63464">
Bug
63464</a>
-
image/svg+xml is wrongly considered as binary</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63490">
Bug
63490</a>
-
At end of scheduler duration lots of Samplers gets executed at the same time</li>
<li>
<a href="https://github.com/apache/jmeter/pull/480">
Pull request #480</a>,
<a href="https://github.com/apache/jmeter/pull/482">
Pull request #482</a>
-
Fix a few typos in comments and log messages. Based on patch by Anass Benomar (anassbenomar at gmail.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63751">
Bug
63751</a>
-
Correct a typo in Chinese translations. Reported by Jinliang Wang (wjl31802 at 126.com)</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63723">
Bug
63723</a>
-
Distributed testing: JMeter master ends distributed test though some threads still are active</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63614">
Bug
63614</a>
-
Distributed testing: Unable to generate Dashboard report at end of load test</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63862">
Bug
63862</a>
-
Search Dialog / Search in View Results Tree: Uncaught exception if regex is checked and regex is invalid</li>
<li>
<a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=63793">
Bug
63793</a>
-
Fix unsecure XML Parsing</li>
</ul>
<h2 class="ch_section" id="Thanks">Thanks</h2>
<p>We thank all contributors mentioned in bug and improvement sections above:
</p>
<ul>
<li>Clifford Harms (clifford.harms at gmail.com)</li>
<li>
<a href="https://ubikloadpack.com">Ubik Load Pack</a>
</li>
<li>Xia Li</li>
<li>Naveen Nandwani (naveen.nandwani at india.nec.com)</li>
<li>Artem Fedorov (artem.fedorov at blazemeter.com)</li>
<li>Ori Marko (orimarko at gmail.com)</li>
<li>Sun Tao (buzzerrookie at hotmail.com)</li>
<li>John Bergqvist (John.Bergqvist at diffblue.com)</li>
<li>Franz Schwab (franz.schwab at exasol.com)</li>
<li>Graham Russell (graham at ham1.co.uk)</li>
<li>Anass Benomar (anassbenomar at gmail.com)</li>
<li>
<a href="https://github.com/bednar">Jakub Bedn&aacute;&#345;</a>
</li>
<li>Pascal Schumacher (pascalschumacher at apache.org)</li>
<li>
<a href="https://graphaware.com/">GraphAware</a>
</li>
</ul>
<p>We also thank bug reporters who helped us improve JMeter.</p>
<ul>
<li>Sergiy Iampol (sergiy.iampol at playtech.com)</li>
<li>Brian Tully (brian.tully at acquia.com)</li>
<li>Amer Ghazal (amerghazal at gmail.com)</li>
<li>Stefan Seide (stefan at trilobyte-se.de)</li>
<li>Havlicek Honza (havlicek.honza at gmail.com)</li>
<li>Pierre Astruc (pierre.astruc at evertest.com)</li>
<li>Jinliang Wang (wjl31802 at 126.com)</li>
</ul>
<p>
Apologies if we have omitted anyone else.
</p>
<h2 class="ch_section" id="Known problems and workarounds">Known problems and workarounds</h2>
<ul>
<li>The Once Only controller behaves correctly under a Thread Group or Loop Controller,
but otherwise its behaviour is not consistent (or clearly specified).</li>
<li>
The numbers that appear to the left of the green box are the number of active threads / total number of threads,
the total number of threads only applies to a locally run test, otherwise it will show <span class="code">0</span> (see <a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=55510">
Bug
55510</a>).
</li>
<li>
Note that under some windows systems you may have this WARNING:
<pre class="source">
java.util.prefs.WindowsPreferences
WARNING: Could not open/create prefs root node Software\JavaSoft\Prefs at root 0
x80000002. Windows RegCreateKeyEx(&hellip;) returned error code 5.
</pre>
The fix is to run JMeter as Administrator, it will create the registry key for you, then you can restart JMeter as a normal user and you won't have the warning anymore.
</li>
<li>
You may encounter the following error:
<pre class="source">java.security.cert.CertificateException: Certificates does not conform to algorithm constraints</pre>
if you run a HTTPS request on a web site with a SSL certificate (itself or one of SSL certificates in its chain of trust) with a signature
algorithm using MD2 (like <span class="code">md2WithRSAEncryption</span>) or with a SSL certificate with a size lower than 1024 bits.
This error is related to increased security in Java 8+.
<br>
To allow you to perform your HTTPS request, you can downgrade the security of your Java installation by editing
the Java <span class="code">jdk.certpath.disabledAlgorithms</span> property. Remove the MD2 value or the constraint on size, depending on your case.
<br>
This property is in this file:
<pre class="source">JAVA_HOME/jre/lib/security/java.security</pre>
See <a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=56357">
Bug
56357</a> for details.
</li>
<li>
Under Mac OSX Aggregate Graph will show wrong values due to mirroring effect on numbers.
This is due to a known Java bug, see Bug <a href="https://bugs.openjdk.java.net/browse/JDK-8065373">JDK-8065373</a>
The fix is to use JDK8_u45 or later.
</li>
<li>
View Results Tree may fail to display some HTML code under HTML renderer, see <a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=54586">
Bug
54586</a>.
This is due to a known Java bug which fails to parse "<span class="code">px</span>" units in row/col attributes.
See Bug <a href="https://bugs.openjdk.java.net/browse/JDK-8031109">JDK-8031109</a>
The fix is to use JDK9 b65 or later.
</li>
<li>
JTable selection with keyboard (<span class="keycombo"><span class="keysym">SHIFT</span>&nbsp;+&nbsp;<span class="keysym">up/down</span></span>) is totally unusable with Java 7 on Mac OSX.
This is due to a known Java bug <a href="https://bugs.openjdk.java.net/browse/JDK-8025126">JDK-8025126</a>
The fix is to use JDK 8 b132 or later.
</li>
<li>
Since Java 11 the JavaScript implementation <a href="https://openjdk.java.net/jeps/335">Nashorn has been deprecated</a>.
Java will emit the following deprecation warnings, if you are using JavaScript based on Nashorn.
<pre class="source">
Warning: Nashorn engine is planned to be removed from a future JDK release
</pre>
To silence these warnings, add <span class="code">-Dnashorn.args=--no-deprecation-warning</span> to your Java arguments.
That can be achieved by setting the enviroment variable <span class="code">JVM_ARGS</span>
<pre class="source">
export JVM_ARGS="-Dnashorn.args=--no-deprecation-warning"
</pre>
</li>
</ul>
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