title: Why does IntelliJ mark distributionUrl as unused in maven-wrapper.properties?
body: <p>I'm fairly new to Spring.</p>
  
  <p>I used <a href="https://start.spring.io/" rel="nofollow noreferrer">https://start.spring.io/</a> to bootstrap a new Spring project and load it in IntellJ IDEA. When making the initial commit, IDEA remarked that there was an unused variable in <code>.mvn/wrapper/maven-wrapper.properties</code>:</p>
  
  <blockquote>
    <p>distributionUrl=<a href="https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/4.5.4/apache-maven-3.5.4-bin.zip" rel="nofollow noreferrer">https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/4.5.4/apache-maven-3.5.4-bin.zip</a></p>
  </blockquote>
  
  <p>From the README of <a href="https://github.com/takari/maven-wrapper#using-a-different-version-of-maven" rel="nofollow noreferrer">maven-wrapper</a> I can tell it's used to control which maven version is used by the wrapper. Then why does IntelliJ wrongfully mark it as unused and how do I fix it?</p>