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<h2>Filter using ParDo</h2>
<p>In this task, we are going to implement a filter function that filters out the even numbers by using
    <a href="https://beam.apache.org/releases/javadoc/2.11.0/org/apache/beam/sdk/transforms/DoFn.html">
        DoFn</a>.
</p>
<br>
<br>
<div class='hint'>Use <a href="https://beam.apache.org/releases/javadoc/2.11.0/org/apache/beam/sdk/transforms/ParDo.html">ParDo</a>
    with <a href="https://beam.apache.org/releases/javadoc/2.11.0/org/apache/beam/sdk/transforms/DoFn.html">DoFn</a>
    and only output the intended element.</div>
</html>